Grammar Quiz
[ Tenses ]

There ____ economies since the beginning of civilization, but as a field of study, economics ____ only recently.

A. have been / develops

B. are / has been developing     

C. have been / has developed

D. were / was developing     

Select your answer:
A  B  C  D  E 


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Other quiz:

Grammar › View

Listen! The baby ______ over there.

A. is crying

B. are crying

C. to cry

D. crying

Preposition of Time › View

After I eat dinner, I like to watch TV _____ the evening.

A. in

B. on

C. at

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