Kitty ________ to Beijing and she won’t come back until next Monday.

I can’t stop smoking, doctor.— For your health, I’m afraid you________.

Nancy, you are going to buy a flat here, aren’t you ? — Yes, but I can’t ____ an expensive one .

_____is the bridge over the river?—It’s three miles.[ ]

Most scientists seem to agree that ________ certain limit should be set on ______sale of cars to ease air pollution.