單項(xiàng)選擇題

It is dangerous to（）in present position.

A.remain
B.remaining
C.be remaining
D.be remained

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單項(xiàng)選擇題

It’s（）that the cargo was damaged by your stevedores.

A.bright
B.distinct
C.plain
D.evident

單項(xiàng)選擇題

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

A.close
B.closing
C.to close
D.closed

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