单项选择题
A.duty B.responsibility C.job D.work
Please return it after （）it.A.useB.usedC.usingD.to use
单项选择题Please return it after （）it.
A.use B.used C.using D.to use
The chief officer is responsible （）the overall maintena...
单项选择题The chief officer is responsible （）the overall maintenance of deck department.
A.for B.to C.with D.of
At sea, much of the （）time is spent maintaining the shi...
单项选择题At sea, much of the （）time is spent maintaining the ship and her equipment in good condition.
A.officers’ B.engineers’ C.sailors’ D.pursers’
