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單項選擇題

An engineer, together with some motormen （）to help in the repair work.

A.send
B.sends
C.was sent
D.were sent

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單項選擇題

If there are （） in the repair work, please come to our duty engineer at once.

A.any problem
B.some problem
C.any problems
D.some problems

單項選擇題

If the surveyors （）yesterday, they would have finished the survey work.

A.did not interrupt
B.were not interrupted
C.had not interrupted
D.had not been interrupted

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