[ 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
Random Topics:
Simple TensesArgumentative VocabularyCommunicative GrammarComplex SentencesFuture PlansPrepositions of TimeNoun Clauses with THATActive & Passive VoiceTenses - AuxiliariesCausative VerbOther quiz:
Grammar and Vocabulary › ViewYou use a ___________to see in the dark.
A. compass
B. torch
C. insect repellent
Present Tense › View
how long ______ Pete?
A. do you know
B. are you knowing
C. have you known
D. have you been knowing
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