— Why don’t you stay a little longer？
— ______, but I really should be on my way.

There happened to be nobody under the wall when it fell down, ____ ?

Do you know __________ that made it possible for them to continue their project?

She is lucky to have found a job she likes and______, she can get there within 10 minutes．

—I don’t think I will win a lottery (彩票) of 5,000,000 dollars in all my life.
—Well, ______. Everything can happen.

----- Perhaps John’s not in.
-----_______. Look, the light’s on.

. ______________that no one wants to __________ it.

Kate paid him in advance, which ______ was a mistake.

All________made______possible for China to succeed in carrying on its reforms and open-door policy.

----Look! ________a high probability that their team will win.
----Yes, the members are cooperating so well.