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问题

Hi, Grandma, why do you look so tired? — I’m tiredI _______ the cleaning all morning

A:did
B:had done
C:have been doing
D:have done
正确答案是:
同类题型

The Statue of Liberty is in _____.

Can you guess the MP4 player yesterday— Sorry,I’ve no idea about it.

Do you have anything to say for yourselves?—-Yes, there is one point______ we must insist on.

John does not want to watch talk shows because they are .

We can use QQ to talk with each other online.- Really Could you please show me ____ it

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