--What made your father throw up last night?

--I think the large quantities of wine __________.

A. was             B. might         C. make        D. did

The customer bargained with the shopkeeper for a long time, and finally they agreed ___________ the price.

   A. to            B. with          C. on              D. at

If you ____________ stop smoking, you can only expect to have a bad cough.

A. won’t          B. would not   C. do not     D. can not

—Why ! Where's my passport? Maybe I left it on the plane.

     --My Goodness ! You ____________ things behind.

A. had never left                B. didn't leave    

C. never left                   D. haven’t left

— You must be excited about going to Japan for schooling.

  —__________ , but I'm afraid I can't do well because Japanese is poor.

A. Never mind                   B. Well, I ought to

C. I don’t know yet               D. Certainly not

--You forgot your keys when you left home in the morning.

--Good heavens,___________.

A. so did I.    B. so I did.   C. so you did.   D. so did you.

Scientists say it may be five or ten years___________ it is possible to test this medicine on human patients.

A.since           B. before      C. after     D. when

I would have come to see you earlier, but I__________too busy.

A. had been     B. were       C. was       D. would be

—He _____to the meeting. Have you informed him of it?

   —Sorry. I______to.

A. hasn’t come; am going

B. didn’t come; have forgotten

C. hasn’t come; forgot

D. doesn’t come; will have

_____, experts point out that students can easily fail at starting their business because of a lack of preparations.

    A.But         B.However       C. while        D.though