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.

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.

— I heard they went skiing in the mountains last winter.
— It ________ true because there was little snow there.