Last night Mr. Crook didn’t come back at the usual time. ______, he met some friends and atayed out unitl midnght.

A. Meanwhile      B.However       C.Instead               D.Yet

 — Shall I give you a ride as you live so far away ?

— Thank you. _______.

A. It couldn’t be better              B. Of course you can

C. If you like                      D. It’s up to you

It has been announced that candidates ______ remain in their seats until all the papers have been collected.

A. can         B. will        C. may        D. shall

 “I called you yesterday. A woman answered, but I didn’t recognize her voice.” “Oh, it _____ my aunt Jean.”

    A. must be               B. must have been

    C. might be              D. can have been

.I _________ you, but I didn’t think you would listen to me.

A.could have told      B.must have told    C.should tell           D.might rell

The two strangers have been talking in the park for a long time as though they ______old friends.

  A. are          B. should be      C. were              D. would be

They haven’t arrived yet but we _____ them at any moment.

    A. are expected          B. have expected   C. are expecting         D. will expect

He traveled to many mountain villages and saw many poor children out of school. This experience    his life.

   A．would change    B．had changed   C．was to change       D．was changing

----I’m sorry, but there is no smoking on this flight.

----Oh, I _____ that. Sorry, I won’t again.

A．don’t know      B. didn’t know      C. won’t know        D. haven’t known

With more forests being destroyed, huge quantities of good earth _____ each year.

A. is washing away                          B. is being washed away

C. are washing away                        D. are being washed away