I was just about to leave school _____ I heard the door bell.

I don’t think the snow will _____ our plans for a picnic.

Mr. Smith will be _____ the office next week when the manager is away.

We need _____ information about the climate before we make our decision.

He warned his students _____ late for the examination next week.

The plane will take off at 6:00 pm, so I have to be at the airport （）4:00 pm at the latest.

Is there a gas station around _____ I can get some petrol?

It is always difficult to live in a foreign country, _____ if you don’t speak its language.

He gives us a lot of trouble-but I like him _____.

He didn’t go into details on the subject, but just spoke _____