Level Test 2

It's usually quite simple to cross the border between the USA and Canada ___ these two countries have friendly relations.

Make sure you close all the windows ___ it starts to rain.

___ a university professor returns from a sabbatical leave, he should be better qualified.

My friend John, ___ lives in California, has a car with a New York license.

She's ___ a snobbish person ___ nobody likes to be with her.

Do you think this is something ___ can be learned?

Don't go out ___ you've finished your work.

___ you see me, get in the car.

___ I had known how much I would disappoint him, I woudn't have done it.

I think I know ___ he left the job.