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單項(xiàng)選擇題

When you keep a gangway watch, you should （）the mooring lines according to the rise and fall of the tide.

A.adjusted
B.adjusting
C.adjusts
D.adjust

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單項(xiàng)選擇題

Lower gangway into place and （）safety net.

A.fast
B.make fast
C.fasten
D.fastened

單項(xiàng)選擇題

We should hoist national flag （）.

A. on time
B. in time
C. soon
D. at times