单项选择题

You ought to do ______ your mother tells you.

A．when
B．while
C．as
D．that
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单项选择题
The house is cold here. A ______ candle can hardly make it warm.
A．light
B．lighted
C．being light
D．lighting
单项选择题
Oh, Robert. ______ you gave us!
A．How a nice surprise
B．What a nice surprise
C．How nice surprise
D．What nice surprise
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