单项选择题

-（）
-I’m the agent.

A. What are you?
B. Where are you from?
C. Who are you?
D. What are you doing?

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单项选择题

（）?
-I am your agent. I want to see the captain.

A. What are you?
B. What can I do for you?
C. Where are you from?
D. What are you doing?

单项选择题

A. a small
B. a little bit
C. a many bit
D. a much bit

单项选择题

A.must
B.should
C.can
D.need