单项选择题
A.flying B.flew C.flown D.flies
You should slack the mooring lines （）when the wind is b...
单项选择题You should slack the mooring lines （）when the wind is big.
A. at the same time B. on time C. in time D. at times
We must （）to inspect the problems about the safety of f...
单项选择题We must （）to inspect the problems about the safety of fire prevention.
A.prepares B.preparing C.prepared D.prepare
When you keep a gangway watch, you should （）the mooring...
单项选择题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
