单项选择题

Ever since he arrived, he （） constantly about the weather.

A．complained
B．has been complaining
C．is complaining
D．had been complaining

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单项选择题
Weather （）, the picnic will be held as scheduled.

A．permits
B．should permit
C．will permit
D．permitting
单项选择题
He had his leg （） when he slipped on a piece of ice.

A．breaking
B．broken
C．to break
D．break
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