_________ the earth to be flat, many feared that Columbus would fall off the ...

李老师

_________ the earth to be flat, many feared that Columbus would fall off the edge of the earth.
A. having believed
B. believing
C. believed
D. being believed
      满分：2  分
2.  
--Thanks for your help.
--____________.
A. My pleasure.
B. Never mind.
C. Quite right.
D. Don’t thank me.
      满分：2  分
3.  
Did you use to play the piano?
- _____________________
A. Yes, I do.
B. No, I didn't.
C. Yes, I play it every day.
D. No, I do.
      满分：2  分
4.  Government reports, examination compositions, legal documents and most business letters are the main situations_____ formal language is used.
A. in which
B. at what
C. on which
D. in that
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5.  
--Look!That man looks like Mr. Brown.
--It _____ be him, for he _____ America.
A. can't,has gone to
B. may not,has gone
C. mustn't,has been to
D. can't,has been to
      满分：2  分