A.saw B.see C.seeing D.seen
单项选择题I’m having ()around the ship.
A. fire watch B. fire patrol C. fire protection D. fire alarm
单项选择题()special instruction on heavy lifts.
A.Have B.Has C.Had D.Having
单项选择题Can you tell me ()the galley is?
A.what B.how C.where
单项选择题Spread a safety net()the gangway.
A.on B.over C.by D.under
单项选择题I shall ()the security patrol.
A.kept B.keep C.keeping D.keeps