When a ship is in port, who will keep gangway watch?（）

A. An officer.
B. A sailor on duty.
C. Wharf man.
D. An engineer.

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单项选择题

-Good morning, sir.
-（）. May I help you?

A. Goodbye
B. Thank you
C. Good morning
D. You are welcome

单项选择题

A.went
B.going
C.go
D.goes

单项选择题

A.arranged
B.arrange
C.arranging
D.arranges

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