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單項選擇題

The big man has always been eating on the go,（）he has got stomachache.

A.so
B.however
C.as
D.because

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單項選擇題

Parliament didn't think the Prime Minister did enough in the improvement of fair employment（）he was asked to write to Parliament for further explanation.

A.so
B.therefore
C.since
D.as

單項選擇題

It's not safe（）in the street.

A.played
B.play
C.playing
D.plays

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