單項(xiàng)選擇題

CO₂ cylinder weighed（）normal weight.

A.light than
B.lighter
C.light
D.lighter than

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單項(xiàng)選擇題

Vessel（）still to bunker 50 tones of fresh water.

A.have
B.have been
C.has been
D.has

單項(xiàng)選擇題

We（）to let go starboard anchor.

A.is going
B.be going
C.going
D.are going

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