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單項選擇題

It’s going to rain. Don’t forget （）the hatches.

A. to close
B. to open
C. to close and open
D. closing

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單項選擇題

The crane is （）. Could you ask somebody to repair it?

A. work well
B. good
C. out of order

單項選擇題

The sailor on duty is （）the derrick now.

A.doing
B.adjusting
C.working
D.working on