[ Grammar ]

A new flu vaccine _____ in the USA.

A. Has been found
B. Has been finding
C. Is found
D. Has found

Select your answer:
     


Random Topics:
Embedded QuestionsIndefinite PronounLay vs. Lie

Next quiz: Lay vs. Lie

I … down to sleep when he called me.

(a) lay
(b) laid


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