The tetracyclines, _____ antibiotics, are used to treat infections. ...

[ Grammar for TOEFL ]

The tetracyclines, _____ antibiotics, are used to treat infections.

A. are a family of

B. being a family

C. a family of

D. their family is

Select your answer:
A B C D E

Other quiz:

Adjectives and Articles › View

Identify the adjective in the sentence: ‘The red car sped past us.’

A. red

B. past

C. sped

D. car

Vocabulary & Grammar › View

The government is preparing for an ___ of a new flu virus.

A. outrage

B. outbreak

C. outlook

D. oversight

Tenses › View

‘We were studying in Bangkok’

A. Past Simple

B. Past Continuous

C. Future Perfect

D. Present Continuous

Grammar: Simple Past and Past Continuous › View

You look tired. I think you should go to _____ bed early.

A. the

B. ∅

C. a