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單項選擇題

This machine （）out of order very often, but now it works well.

A.is used to be
B.was used to be
C.used to be
D.was used to

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When we arrived here yesterday, their ship （）for three days.

A.has left
B.had left
C.has been away
D.had been away

單項選擇題

The accident resulted （） the motorman’s carelessness.

A.in
B.to
C.from
D.by

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