相关考题
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单项选择题
（）persons who come on board to do their business.
A.Receive
B.Receiving
C.Received
D.receives -
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 -
单项选择题
The gangway is one meter higher,（） it, please.
A.lowing
B.lower
C.low
D.lowed
