Whatever happened to the measles outbreak that shocked Bangladesh this year

Study the questions and tasks

Work through the material below, or start the interactive practice above to complete an attempt. Try the exercises before opening any answer or transcript sections, then use them to review your work.

Practice level

C2. Try this level if you can follow the instructions and understand most of the language; choose an earlier level if you need more support.

Question formats

Single choice

How to approach this practice

Read the complete sentence and notice the subject, verb form, time reference and word order before answering.

1. Question 1 · Single choice

   Choose one answer.

   Which sentence correctly uses a concessive subordinate clause?

   1. Although the figure includes suspected cases, it remains informative.
   2. Although includes suspected cases, the figure remains informative.
   3. Although the figure including suspected cases, it remains informative.
   4. Although the figure includes suspected cases, but it remains informative.
   Check answers and explanations

   Answer

   Although the figure includes suspected cases, it remains informative.

   Although introduces a contrast between the large total and diagnostic uncertainty.

2. Question 2 · Single choice

   Choose one answer.

   Which construction correctly expresses an unrealized future condition?

   1. If officials acted sooner, the response may have been clearer.
   2. If officials act sooner, the response would have been clearer.
   3. If officials were to act, the response would become more assessable.
   4. If officials had acted sooner, the response will become clearer.
   Check answers and explanations

   Answer

   If officials were to act, the response would become more assessable.

   The mixed conditional links a possible future action with a present evaluative consequence.

3. Question 3 · Single choice

   Choose one answer.

   Which option uses inversion correctly after a negative adverbial?

   1. Only then officials will know whether containment succeeded.
   2. Only then will officials know whether containment succeeded.
   3. Only then officials know whether containment succeeded.
   4. Only then knowing officials whether containment succeeded.
   Check answers and explanations

   Answer

   Only then will officials know whether containment succeeded.

   Negative inversion requires auxiliary-verb inversion after “only then.”

4. Question 4 · Single choice

   Choose one answer.

   Which sentence correctly uses a mandative subjunctive?

   1. It is essential that officials identifies the measures.
   2. It is essential that officials identified the measures.
   3. It is essential that officials identify the measures.
   4. It is essential that officials identifying the measures.
   Check answers and explanations

   Answer

   It is essential that officials identify the measures.

   Formal American English permits the base verb after “it is essential that.”

5. Question 5 · Single choice

   Choose one answer.

   Which sentence correctly uses a reduced relative clause?

   1. The cases reported this year remain under review.
   2. The cases reporting this year remain under review.
   3. The cases were reported this year remain under review.
   4. The cases having report this year remain under review.
   Check answers and explanations

   Answer

   The cases reported this year remain under review.

   “Reported this year” efficiently modifies cases without changing the intended meaning.

6. Question 6 · Single choice

   Choose one answer.

   Which sentence correctly uses a cleft construction for emphasis?

   1. What remains unclear are the response measures.
   2. What remains unclear is the response measures.
   3. It is the response measures what remain unclear.
   4. What remains unclear, the response measures is.
   Check answers and explanations

   Answer

   What remains unclear is the response measures.

   The cleft foregrounds the uncertainty surrounding the response measures.

7. Question 7 · Single choice

   Choose one answer.

   Which option correctly maintains parallel structure?

   1. Officials must assess the scale, identifying its limits, and whether containment works.
   2. Officials must assess the scale, identify its limits, and determine whether containment works.
   3. Officials must assessing the scale, identify its limits, and determine containment.
   4. Officials must assess the scale, identification of limits, and whether containment works.
   Check answers and explanations

   Answer

   Officials must assess the scale, identify its limits, and determine whether containment works.

   The coordinated verbs share the same grammatical form and complement pattern.

8. Question 8 · Single choice

   Choose one answer.

   Which sentence correctly uses a nonrestrictive participial phrase?

   1. The toll surpassed 1,000, establishing a grave threshold.
   2. The toll surpassed 1,000, established a grave threshold.
   3. The toll surpassing 1,000, it established a grave threshold.
   4. The toll surpassed 1,000, and establishing a grave threshold.
   Check answers and explanations

   Answer

   The toll surpassed 1,000, establishing a grave threshold.

   The participial phrase logically modifies the preceding clause’s subject and adds consequence.

What to review next

After checking an answer, explain the rule in your own words and write a new sentence using the same pattern. Revisit any rules you could not explain.

A focused practice result shows how you did on these tasks. Use several activities across skills to decide what to study next; one practice score does not certify an overall CEFR level.