—Why didn't you answer my phone when I phoned you at about 11 p. m. yesterday?

   —I ___________and failed to hear the phone.

A. might have slept               B. must be sleeping

C. might be sleeping              D. must have been sleeping

People greatly__________ in their views of life.

A. lead       B. differ       C. bring       D. struggle

Tom suggested that we __________such a meeting, but Jenny insisted that it _________of great importance.

A. not hold ; should be            B. didn't hold ; be   

C. hold ; was                    D. not hold ; was

We can’t go on with the experiment because the computer_________.

A. hasn’t been repaired      B. hasn’t repaired

C. is not repaired          D. hadn’t been repaired

Is this the restaurant ___________ ?

   A. which you work                 B. in which you work

   C. for which you work              D. where you work in

----What do you know the _____ of are the pig influenza in humans?

   ---- usually similar to regular human seasonal influenza .

   A. symptoms        B.sympathy            C.symbol           D.symptom

Has she had a cold like pig flu. _____?  for she is absent.

     A.if anything        B. or anything         C.for anything       D.anything but

Single-parent usually____ some of the functions that absent adult in the house would have served under the financial crisis.

 A. takes over          B. takes after           C. takes out           D.takes in

—Put these glasses away before they ________.

—OK. I’ll put them in the cupboard.

A. have broken      B. are breaking  C. get broken     D. will be broken

There are many old trees in our school, each ________ about 100 years ago.

A. dates back to     B. dating from   C. dated back   D. which dated to