题目列表(包括答案和解析)
— Has Jack finished his homework yet?
— I have no idea;he _____ it this morning.
A. was doing B. had been doing C. has done D. did
— Has Jack finished his homework yet?
— I have no idea;he _____ it this morning.
A.was doing | B.had been doing | C.has done | D.did |
.—— Has Jack finished his homework yet?
—— I have no idea; he ___it this morning.
A.was doing B.had been doing C.has done D.did
— Has Jack finished his homework yet?
— I have no idea;he __it this morning.
A. was doing B. had been doing C. has done D. did
— Has Jack finished his homework yet?
— I have no idea;he __it this morning.
A. was doing B. had been doing C. has done D. did
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