单项选择题
A.In B.On C.From D.To
（）the time of collision，the 3rd officer was on the brid...
单项选择题（）the time of collision，the 3rd officer was on the bridge．
A.At B.On C.Of D.In
（）the ship leaves at 1000 today，she can arrive there to...
单项选择题（）the ship leaves at 1000 today，she can arrive there tomorrow.
A.When B.How C.If D.Should
（）the packing is the same，the lots are different in mar...
单项选择题（）the packing is the same，the lots are different in marks.
A.For B.Since C.Because D.Although
