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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1.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
2.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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