单项选择题

It is necessary______ the hook immediately.

A．for him to return
B．for him return
C．that he returns
D．his returning
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单项选择题
______the television, there is an important football match now.
A．Turn over
B．Turn off
C．Turn down
D．Turn on
单项选择题
Will you please______ it again I don't quite catch it.
A．tell
B．speak
C．talk
D．say
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