單項選擇題

The sailor taking （）watch should do cleaning work on the bridge.

A. 0 to 4
B. 4 to 8
C. 8 to 12
D. 12 to 16

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單項選擇題

The sailors do cleaning and repair work under the supervision of the （）.

A. chief officer
B. captain
C. bosun
D. second officer

單項選擇題

Cleaning is a constant job （）board a ship.

A.at
B.on
C.for
D.with