The staff _______ ___________ ___________ lunch for the special guests ...

★ Past Perfect and Past Perfect Continuous Tense

The staff _______ ___________ ___________ lunch for the special guests since 8 a.m.

A. had been preparing

B. must have prepared

C. would have prepared

D. could have been preparing

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Helen ______________ (not feel) well for two days when I _______________ (visit) her last Sunday.

A. did not feel, visited

B. did not feel, had been visiting

C. had not been feeling, visited

D. doesn’t feel, visits