[ Grammar ]
Recently, a new vaccine against measles __________.
A. has been developed
B. had been developed
C. had developed
D. was developing
Select your answer:
Random Topics:
So Such Enough TooComparatives or SuperlativesThe Simple Present TenseModals and PhrasesPresent Simple Affirmative and NegativeWish SentenceAction, Helping & Linking VerbsAdverbs, Prefixes, and SuffixesVerb Patterns / IngVerb and PrepositionOther quiz:
Vocabulary › ViewDarla made herself ______________ by offering golf lessons at lunch.
A. accessible
B. iconoclast
C. radiant
D. genre
Continuous Tenses › View
Will you be …. for her when the plane arrives?
A. waited
B. waiting
C. wait
D. are waiting