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问题

The window is dirty——— I knowIt __________ for weeks

A:hasn’t cleaned
B:didn’t clean
C:wasn’t cleaned
D:hasn’t been cleaned
正确答案是:
同类题型

What’s wrong with you, Tom You look tired.–I to study for the final exam last night.

Do you mind if I turn off the radio– __________. The good news will be on the air.

Can you help me _________ this cat I go to my grandparents’ home this afternoon.—OK.

As the world’s population continues to grow, the ______ of food becomes more and more of a concern.

You do not have to count all the nuts. Just ________ how many there are.

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