Mr. Bush is on time for everything. How ____ it be that he was late for the opening ceremony ?

A. can           B. should           C. may        D. must

You _____ practise the drums while the baby is sleeping.

    A. needn’t               B. mightn’t

    C. mustn’t               D. won’t

 I______you a beautiful present for your birthday,but I was short of money at that time.

   A. would buy     B. had bought    C. would like to have bought    D. must have bought　

Why didn't you tell me there was no meeting today? I _____ all the way here _____the heavy snow.

A. needn't have driven；through       B. can't have driven；across

C. mustn't have driven；through       D. shouldn't have driven；cross

They won’t buy any new clothes because they _____ money to buy a new car.

    A. save                 B. were saving   C. have saved           D. are saving

—Well, that was really a good meal. I _______ you were a really good cook.

    —Thank you.

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

I became a teacher in 1993. I _______ for 13 years by next summer.

  A. has taught                 B. will teach   C. has been teaching      D. will have been teaching

—You were out when I dropped in at your house.

—Oh, I_______ for a friend from England at the airport.

A. was waiting     B. had waited            C. am waiting     D. have waited

 —Isn’t it a great surprise that I happened to meet my university English teacher at the South Bank Parkland last week?

—How long ____ you _____ each other, then?

A. hadn’t; seen    B. haven’t; seen                        C. didn’t; see              D. don’t; see

In the cross-lake swimming race, a boat will be ____in case of an emergency.

A. standing by          B. turning on        C. getting on           D. running on