单项选择题

If we （） this speed, we will arrive there in about two days. 

A．keep up
B．keep from
C．keep out
D．keep away

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单项选择题
Theyareshockedtofind（）waterhasbeenpolluted.

A．large quantities of
B．a great number of
C．a good deal of
D．a plenty of
单项选择题
Bythetimeyougethome,we（）inQingdaoforoneweek.

A．will be staying
B．will have stayed
C．would have stayed
D．have stayed
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