—The concert was wonderful!

  —Really? How I wish I ______to the theatre with you yesterday!

  A. had gone     B. might go       C. were able to go     D. would go

 I feel sure I _____ her before somewhere.

A. was to meet           B. have met  C. had met               D. would meet

 I should very much like to have gone to the party but I _________.

   A．am not invited   B．am not being invited  C．shall not be invited    D．was not invited

 — May I remind you that a Mr Li is waiting outside, sir?

??—Oh, that is right, I ____ about it.

A. forget              B. had forgotten       C forgot             D. have forgotten

 —Would you like to join us in playing the game?

—I’m sorry, but my homework ______ by now.

A. hasn’t finished      B. hasn’t been finished   C. isn’t finished         D. won’t be finished

一Is there any possible way to help them get rid of such a bad habit?

一To tell the truth, it’s very hard．But we     on this problem．

A.worked             B.had worked            C.are working         D.had been working

At times the balance in nature is ______ , resulting in a number of possibly unforeseen effects.

A. troubled       B. confused        C. disturbed       D. puzzled

Some kinds of animals can _______ the colour of their surroundings.

A. take on      B. dress up     C. put on D. get into

—What’s wrong with him?

—The picture he came across        his memory of a sad story in his childhood.

A. put off       B. took off        C. set off.             D. gave off

—You've made great progress in your studies of English, haven't you?

—Yes, but much________to be done.

A. leaves            B.keeps                C. remains         D. has