You’ll never guess who I met today — my old teacher！ We _____ for 20 years.

    A. don’t meet      B. haven’t met C. hadn’t met      D. couldn’t meet

—_______ John this week?

—Yes.

—Where _______ him?

—In the library.

   A．Did you see; did you see   B．Have you seen; did you see

C．Do you see; have you seen      D．Have you seen; have you seen

—My nephew will come tomorrow.

  — But I’d rather he _____ the day after tomorrow.                     

A. came                       B. is coming                 C. will come          D. had come

Great as Newton was, many of his ideas _____today and are being modified by the work of scientists of our time. 

A. are to challenge      B. may be challenged     C. have been challenged     D. are challenged

 What I wanted to know was when and where the meeting______.

A.was holding　    B.had held　　      C.was to hold　     D.was to be held

He _____the problem _____in his mind for a whole week before he did anything about it.

A. switched; on        B. kicked; up      C. turned; over         D. took; on

How I wish that I could ______ my ideas in simple and wonderful English when chatting on the net.

A. set out       B. set off   C. set over    D. set up

If you don't make up your mind to get rid of your bad habits，you won’t be able to_________your goal．

A.achieve        B.win            C.gain                D.require

It is reported that the police will soon ____ the case of two missing children.

A. look upon           B. look after          C. look into           D. look out

Shortly after the book Uncle Tom's Cabin________, the Civil War of America________.

A.came about; broke away http                            B.came out; broke out http:/

C.came on; broke up                    D.came up; broke down