—Where have you been?—I         in the heavy traffic. Otherwise I         here earlier.

If he _______ the opportunity at that time, he would be the new department manager now.

We surely desire that the tour leader ________us immediately of any change in the travel schedules.   

When I am tired with math exercises, I            go out for a walk to get relaxed.

— Little Tom broke a window in our class.  — I would rather he            that.

The World Wide Web is sometimes jokingly called the World Wide Wait because it ________ be very slow.   

_____ his overdrinking, the accident would not have happened.

How I wish I________ to repair the TV! I only made it worse .

All the doctors in the hospital insisted that he________ badly wounded and that he ______at once.

Don’t come this morning. I would rather you______ the day after tomorrow.

— Can you imagine what is Jack doing now? He is playing football outside while everyone else is busy in class!— He　　　　 his homework, I think.

My friends urged that I ________ the well-paid jobs.

Meng Peij ie，an ordinary girl who was among the 10 people awarded the title of “Touching China 2011”，must be both optimistic and strong-minded. Otherwise, she _______  her disabled adoptive mother for 12 years.

How ___Mike have refused such a good opportunity to go abroad for further study?

We shouldn't have come north for Christmas vacation. If we _______, we wouldn't be stuck in the snow right now.

—Do you know where David is? I can’t find him anywhere.—Well . He          have gone far— his coat’s still here. 

—Sorry, Mr. Wang. I didn’t finish the assignment yesterday. Oh, you ________ have done it as yesterday was the deadline.

If  we ___________some measures, we might have prevented the environmental pollution．

They        have arrived at lunchtime, but their flight was delayed.

— Why didn’t you go to the dance last night? — If I             tired, I would have.