单项选择题

The output of our factory is now twice（）it was three years ago.

A、 what
B、 that
C、 as
D、 which

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单项选择题
We don't allow（）in the meeting room.

A、 to smoke
B、 smoked
C、 smoking
D、 to smoking
单项选择题
There were（）for Saturday's movie.

A、 not available tickets
B、 no available tickets
C、 no tickets available
D、 tickets no available
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