问题

I am looking after Tom today.He’s been in my house ______________ 8:00 this morning.
A:since
B:for
C:at
D:till
B:for
C:at
D:till
正确答案是:
同类题型
I have classes today . class is P.E.
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Would you like _____dinner with us?
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This is ___ book I told you about last week. I ’ve never read ___ better one before