What People Aged 50 and Older Need to Know About Flu Shots

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

C1. 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

Use the surrounding sentence to identify the meaning and word form needed. Check which words naturally go together.

1. Question 1 · Single choice

   Choose one answer.

   Which option best defines substantial?

   1. Considerable in amount, degree, or importance
   2. Occurring only in small, isolated quantities
   3. Unrelated to practical consequences or outcomes
   4. Expected to disappear without external intervention
   Check answers and explanations

   Answer

   Considerable in amount, degree, or importance

   Substantial describes something considerable in amount, degree, or importance.

2. Question 2 · Single choice

   Choose one answer.

   Which option best defines timetable?

   1. A planned schedule indicating when stages or events should occur
   2. A scientific explanation of how a substance functions
   3. A record of unexpected outcomes after completion
   4. A method for comparing competing theoretical claims
   Check answers and explanations

   Answer

   A planned schedule indicating when stages or events should occur

   A timetable is a planned schedule for stages or events.

3. Question 3 · Single choice

   Choose one answer.

   Which option best defines circulate?

   1. To spread or move among people, places, or systems
   2. To remain fixed within one controlled environment
   3. To be deliberately removed from public discussion
   4. To become impossible to detect after repeated testing
   Check answers and explanations

   Answer

   To spread or move among people, places, or systems

   Circulate means to spread or move among people, places, or systems.

4. Question 4 · Single choice

   Choose one answer.

   Which option best defines antigen?

   1. a substance that triggers an immune response, especially antibody production
   2. A schedule governing a manufacturing sequence
   3. A container used to grow viral components
   4. A prediction about future seasonal conditions
   Check answers and explanations

   Answer

   a substance that triggers an immune response, especially antibody production

   An antigen triggers an immune response, particularly antibody production.

5. Question 5 · Single choice

   Choose one answer.

   Which option best defines flexibility?

   1. the capacity to adapt readily to changing conditions or requirements
   2. The certainty that a prediction will prove accurate
   3. The inability to modify an established procedure
   4. The measurement of immune activity after vaccination
   Check answers and explanations

   Answer

   the capacity to adapt readily to changing conditions or requirements

   Flexibility is the capacity to adapt readily to changing conditions.

6. Question 6 · Single choice

   Choose one answer.

   Which option best defines formulations?

   1. distinct compositions or versions of a preparation designed for a particular purpose
   2. Predictions concerning which strains might circulate
   3. Instructions sent to cells by genetic material
   4. Periods required for advance production planning
   Check answers and explanations

   Answer

   distinct compositions or versions of a preparation designed for a particular purpose

   Formulations are distinct compositions or versions of a preparation.

7. Question 7 · Single choice

   Choose one answer.

   Which option best defines considerably?

   1. To a notably large extent or degree
   2. Only marginally and without measurable importance
   3. In a manner unrelated to comparative judgments
   4. At an unspecified time before production begins
   Check answers and explanations

   Answer

   To a notably large extent or degree

   Considerably means to a notably large extent or degree.

What to review next

Keep a short list of unfamiliar words with their meanings and example sentences. Practise recalling them later, then use them in a sentence of your own.

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.

Before you practise: a worked example

Read the whole sentence before choosing a word. Check both its meaning and the words it naturally combines with.

Please make an appointment before visiting the clinic.

Make an appointment is a natural word combination. Knowing a dictionary meaning alone may not tell you which verb fits.

This teaching example is separate from the scored questions. After your test, compare any mistakes with the explanation and revisit the topic before trying again.