单项选择题

We have low tide ______.

A．when water reaches its highest level
B．when water stops
C．when water no longer moves
D．when water reaches its lowest level
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单项选择题
I'll go with you after I get through with ______ the house.
A．cleaning
B．to be cleaned
C．to cleaning
D．having cleaned
单项选择题
The man seems angry and I think he means ______ trouble.
A．to make
B．making
C．to have made
D．having made
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