单项选择题

Would you please （）quiet, Billy and Betty

A．keep
B．make
C．take

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单项选择题
It is much （）to go up the hill than to come down.

A．hard
B．harder
C．hardest
单项选择题
Why is the man feeling bad（）

A．He had no sleep last night.
B．He went to bed too late last night.
C．He woke up several times last night.
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