单项选择题
A.kept B.keep C.keeping D.keeps
Where is the captain? -（）.
A. Follow me B. He’s in his cabin C. Yes, he is D. No, he isn’t
A. An officer. B. A sailor on duty. C. Wharf man. D. An engineer.
-Good morning, sir. -（）. May I help you?
A. Goodbye B. Thank you C. Good morning D. You are welcome
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