[ Grammar ]
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:
Comparatives - SuperlativesVerbs & Verb TensesTransitive and Intransitive VerbVerb to bePrepositions and ConjunctionsAnalogyAdverb of Frequency and TensesVerb Present Simple TensePossessive PronounsPresent Progressive (Future)Other quiz:
Grammar › View____ soap and water, the bag looked like new.
A. Having washed with
B. Washing with
C. Washed with
D. Having been washed with
Present Simple & Present Continuous Tenses › View
He usually _____ a white shirt, but today he _____ a blue one.
A. wears / wears
B. wears / is wearing
C. is wearing / wears
D. is wearing / is wearing
Present Simple and Present Continuous › ViewShe ……………………goes to school by motorbike.
A. often
B. am
C. is
D. are
Prepositions › View
Minh Duc went _________ a walk.
A. to
B. at
C. for