问题

Can I tell Peter about the news?– No, I don’t want anyone else to know it. You ________ keep it to yourself.
A:must
B:need
C:can
D:may
B:need
C:can
D:may
正确答案是:
同类题型
The old scientist devoted most of his time ___________ the space science.
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Oh, it’s raining very hard! Our sport meeting has to be till next Sunday.
I_______ my homework when the door bell__________.
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