English C-Test B2: How vaccines are tested
An English C-Test at B2 level: longer sentences with clauses and the passive, topics from study and society.
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25 gaps: 15 on grammar, 10 on vocabulary. Complete the second half of each word, then check; every answer with its explanation is under the text.
Answers and explanations: How vaccines are tested
- it Grammar
"it" replaces "the vaccine" (one thing, singular).
- usually Grammar
Adverb of frequency between "is" and the participle: "it is usually studied".
- in Grammar
"in the laboratory".
- laboratory Vocabulary
"laboratory" = a room for scientific experiments.
- on Grammar
"on animals": you test something on animals.
- If Grammar
"If" introduces a condition.
- first Vocabulary
"the first results" = the earliest results.
- look Vocabulary
"look good": "look" is followed by an adjective, not an adverb.
- small Vocabulary
"a small group" = only a few people.
- of Grammar
"a group of volunteers": "of" links the group to its members.
- volunteers Vocabulary
"volunteers" = people who agree to take part.
- the Grammar
"the vaccine", "the second phase": the thing is known, or fixed by the ordinal number.
- and Grammar
Conjunction joining two parts of equal rank.
- check Vocabulary
"check whether" = find out if.
- all Grammar
"above all" = most importantly.
- it Grammar
"it" replaces "the vaccine" (one thing, singular).
- safe Vocabulary
"safe" = not dangerous.
- the Grammar
"the vaccine", "the second phase": the thing is known, or fixed by the ordinal number.
- phase Vocabulary
"phase" = a stage in a process.
- hundred Grammar
"several hundred people": no -s on "hundred" after a number or "several".
- take Vocabulary
"take part" = participate.
- and Grammar
Conjunction joining two parts of equal rank.
- most Grammar
"the most effective": long adjectives form the superlative with "most".
- dose Vocabulary
"dose" = the amount of a medicine given at one time.
- identified Grammar
Passive "is identified": "be" + past participle.
Tips for B2
- At B2 you meet the passive, relative clauses and linking words such as "however" or "although" more often.
- Watch the word class: adjective or adverb, noun or verb. The start of the word alone is often not enough.
- Keep to about 6 minutes per text, as in the University of Münster C-Test.
More practice texts
B1: The semester ticket · Volunteering in your free time · Food waste in the canteen
B2: Citizen science · Artificial light at night
C1: The printing press · The economics of streaming · The decline of handwriting
Three more texts (B1, B2, C1) on one page →