问题
选择题
Has Jack finished his homework yet?
I've no idea, But he _____ it the whole afternoon. [ ]
A. would do
B. was doing
C. did
D. had done
答案
答案：B
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Has Jack finished his homework yet?
I've no idea, But he _____ it the whole afternoon. [ ]
A. would do
B. was doing
C. did
D. had done
答案：B