单项选择题
A.Lower B.Higher C.Lowered D.High
（） you the officer on duty?A.IsB.BeC.AreD.Have
单项选择题（） you the officer on duty?
A.Is B.Be C.Are D.Have
Spread a （） net under the gangway.A.safeB.safetyC.dange...
单项选择题Spread a （） net under the gangway.
A.safe B.safety C.danger D.dangerous
—What business do you have?—I want to （）your captain.A....
单项选择题—What business do you have?—I want to （）your captain.
A.see B.saw C.seen D.seeing
