A.On B.In C.At D.During
A.to receive B.receiving C.received D.receive
A.at B.with C.on D.within
A.doubt B.question C.wonder D.consideration
A.barely perceptible B.bare perceptible C.barely perceptibly D.bare perceptibly
A.You’d better B.You would better C.You at least D.You at most
A.can you go to the beach B.can you run the vessel upon a beach to prevent its sinking in deep water C.can you handle the vessel along the beach D.can berth along the beach
A.deteriorate B.bad C.heavy D.serous
A.received B.saw C.met D.encountered
A.prevent any possible accident at sea B.prepare a reasonable forecast of the wind and weather C.help the mariner to fix a accurate ship's position D.aid the salvage of a ship in peril