问题
The students _______ busily when Miss Brown went to get a book she _______ in the office
A:had written; left
B:were writing; has left
C:had written; had left
D:were writing; had left
B:were writing; has left
C:had written; had left
D:were writing; had left
正确答案是：
同类题型
I’11 go hiking with Bruce if it tomorrow.
I would appreciate _____ if you could tell me the latest news about the project. [ ]
I don’t like apples, bananas ____ pears.
It is not I but Mr. Green who ____ in charge of the company.
－Mom, _____ I watch TV－Yes, you can. But you have to finish the homework first.