单项选择题
A.waiting B.wait C.waited D.to wait
Ships are always（）on water and they are easy to rust.A....
单项选择题Ships are always（）on water and they are easy to rust.
A.float B.floating C.floats D.floated
She arrived at the anchorage last night and anchored（）b...
单项选择题She arrived at the anchorage last night and anchored（）berth.
A.waiting B.awaiting C.awaiting for D.waited
Shall we（）wait at the roadstead till there is a free be...
单项选择题Shall we（）wait at the roadstead till there is a free berth for us?
A.must B.ought to C.have to D.never
