Bomb Threat Hoaxes Disrupt Flights Across Italy, Poland and Spain

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

Fill in the blank (dropdown), 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 · Fill in the blank (dropdown)

   Choose the correct option for each blank.

   The report distinguishes what is known from what ___ remain uncertain.

   Choices for blank 1

   1. remains
   2. remain
   3. has remained
   4. is remaining
   Check answers and explanations

   Blank 1

   remain

   A plural subject takes “remain” in the present tense.

2. Question 2 · Fill in the blank (dropdown)

   Choose the correct option for each blank.

   Had the authorities ___ the claim as credible, precautionary measures might have followed.

   Choices for blank 1

   1. treated
   2. treating
   3. treat
   4. to treat
   Check answers and explanations

   Blank 1

   treated

   In this inversion, “had” takes a past participle.

3. Question 3 · Fill in the blank (dropdown)

   Choose the correct option for each blank.

   The account, together with its stated limitations, ___ a careful reading.

   Choices for blank 1

   1. warrant
   2. warrants
   3. have warranted
   4. are warranting
   Check answers and explanations

   Blank 1

   warrants

   The singular head noun “account” governs the verb.

4. Question 4 · Single choice

   Choose one answer.

   Choose the sentence with correct parallel structure.

   1. A hoax can redirect passengers, consuming time, and unsettle them.
   2. A hoax can redirect passengers, consume time, and unsettle them.
   3. A hoax can redirect passengers, to consume time, and unsettling them.
   4. A hoax can redirect passengers, consumed time, and to unsettle them.
   Check answers and explanations

   Answer

   A hoax can redirect passengers, consume time, and unsettle them.

   The coordinated verbs share the same bare infinitive form.

5. Question 5 · Fill in the blank (dropdown)

   Choose the correct option for each blank.

   The threats, ___ were later found to be hoaxes, still disrupted travel.

   Choices for blank 1

   1. that
   2. which
   3. what
   4. who
   Check answers and explanations

   Blank 1

   which

   A nonrestrictive clause referring to things takes “which.”

6. Question 6 · Fill in the blank (dropdown)

   Choose the correct option for each blank.

   No sooner ___ the threat been reported than authorities began assessing the possible danger.

   Choices for blank 1

   1. had
   2. did
   3. has
   4. was
   Check answers and explanations

   Blank 1

   had

   “No sooner” inversion requires the auxiliary before the subject.

7. Question 7 · Fill in the blank (dropdown)

   Choose the correct option for each blank.

   The account is too limited ___ the duration of the delays.

   Choices for blank 1

   1. establish
   2. establishing
   3. to establish
   4. established
   Check answers and explanations

   Blank 1

   to establish

   The pattern “too + adjective + to-infinitive” completes the construction.

8. Question 8 · Single choice

   Choose one answer.

   Choose the sentence with correct subject–verb agreement.

   1. Each of the reported flights were affected by delays.
   2. Each of the reported flights was affected by delays.
   3. Each of the reported flights have been affected by delays.
   4. Each of the reported flights are affected by delays.
   Check answers and explanations

   Answer

   Each of the reported flights was affected by delays.

   “Each” is singular and requires a singular verb.

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.