Columbia ___ on a tradition of both social and scientific ...

[ Tenses ]

Columbia ___ on a tradition of both social and scientific innovation for over 250 years

A. carried

B. has carried

C. have carried

D. had carried

Select your answer:

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Perfect Tenses › View

He ________ (visit) the house five times before he decided to buy it.

A. has visited

B. has been visiting

C. had visited

D. had been visiting

Grammar › View

The car was broken yesterday.

A. simple present

B. present continuous

C. simple past

D. past continuous