单项选择题
A.we B.me C.I D.my
Fishing gear with buoys ahead（）you.A.ofB.onC.forD.at
单项选择题Fishing gear with buoys ahead（）you.
A.of B.on C.for D.at
It is（）to anchor in your present position.A.dangerB.dan...
单项选择题It is（）to anchor in your present position.
A.danger B.dangered C.dangeroused D.dangerous
A long blast to warn the vessels（）vicinity.A.inB.onC.at...
单项选择题A long blast to warn the vessels（）vicinity.
A.in B.on C.at D.for
