单项选择题
A.Which B.What C.Where D.How
（）persons who come on board to do their business.A.Rece...
单项选择题（）persons who come on board to do their business.
A.Receive B.Receiving C.Received D.receives
As a duty sailor, he should （）.A. keep a gangway watchB...
单项选择题As a duty sailor, he should （）.
A. keep a gangway watch B. often look around the ship C. hoist and lower national flag on time D. A+B+C
The gangway is one meter higher,（） it, please.A.lowingB...
单项选择题The gangway is one meter higher,（） it, please.
A.lowing B.lower C.low D.lowed
