单项选择题
A.flew B.flown C.flying D.flies
（）（调整）ropes when necessary.A.TryB.AdjustC.NoticeD.Opera...
单项选择题（）（调整）ropes when necessary.
A.Try B.Adjust C.Notice D.Operate
I shall keep the﹙保安巡逻)（） .A. coast patrolB. inshore pat...
单项选择题I shall keep the﹙保安巡逻)（） .
A. coast patrol B. inshore patrol C. patrol service D. security patrol
Where are（危险货）（）carried on board?A. dangerous goodsB. s...
单项选择题Where are（危险货）（）carried on board?
A. dangerous goods B. safe goods C. A or B D.A+B
