—Which flight ? —I want to catch the 13:00.

A. you are to catch B. are you catching

C. do you catch D. have you caught

—Excuse me, sir. Would you do me a favor?

—Of course. What is it?

—I if you could tell me how to fill out this form.

A. had wondered B. was wondering

C. would wonder D. did wonder

How can I ever concentrate (集中精力) if you continuall me with silly questions?

A. have…interrupted B. had interrupted

C. are…interrupting D. were…interrupting

—I bought this shirt for 35 yuan yesterday.

—It’s on sale today for only 29. You should have waited.

—Oh, really? But how I know?

A. would B. can

C. did D. do

—Will you go now?

—Not until I my experiments.

A. will finish B. have finished

C. will have finished D. had finished

—Look! Someone has spilt coffee on the carpet.

—Well, it me.

A. isn’t B. hasn’t been

C. hadn’t been D. wasn’t

—Did you enjoy your holiday?

—Yes, it’s the best holiday I these years.

A. had B. have had

C. had had D. would have

I don’t understand how you got a ticket. I always you a careful driver.

A. think; are B. am thinking; are

C. thought; were D. think; were

I really ought to go on a diet. I on so much weight since I gave up jogging.

A. put B. am putting

C. have put D. had put

We to go skiing tomorrow，but there’s no snow，so we’ll just stay home instead。

A. are going B. were going

C. will go D. would go