Yesterday, while I ________ (work) on the report, my colleague ...

[ Present and Past Tenses ]

Yesterday, while I ________ (work) on the report, my colleague ________ (call) me for assistance.

A. worked / called

B. worked / was calling

C. was working / called

D. was working / was calling

Select your answer:

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Word Form & Verb Tense › View

The last century’s advances such as the discovery of antibiotics and vaccines, and the development of _____ imaging have contributed to longe life

A. medicine

B. medically

C. medical

D. medicines

Second Conditional › View

If you ____________a good friend, you would help me study.

A. were

B. was

C. are

D. had been