单项选择题

A．Twenty minutes.
B．Fifty minutes.
C．Half an hour.
D．Eighty minutes.
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单项选择题
A．It’s my pleasure.B．Thank you.C．No, you don’t need to thank me.D．It’s not necessary.
A．It’s my pleasure.
B．Thank you.
C．No, you don’t need to thank me.
D．It’s not necessary.
单项选择题
A．Good idea.B．Thank you.C．Yes, it’s very hot.D．That’s all right.
A．Good idea.
B．Thank you.
C．Yes, it’s very hot.
D．That’s all right.
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