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單項選擇題

If you（）stop smoking, you can only expect to have a bad cough.

A.won’t
B.wouldn’t
C.don’t
D.can’t

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單項選擇題

It happened（）a winter night.

A.at
B.in
C.by
D.on

單項選擇題

He is the man（）dog bit me.

A.that
B.which
C.who’s
D.whose

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