To be on the safe side, we should fill up the tank now, because we ______ run out of gas on the way.

You seem busy these days. —Yes.I’m looking for a house. It’s really not easy to find _____ with a garden.

Robert is away. He _______ America since last week.

Quite well, thanks.

It takes time for the campus culture to develop and ________, but it doesn’t necessarily justify the lackof culture on new university campus. [ ]