I think I know ___ she left the job.
___ she had known how much she would disappoint her, she wouldn’t have done it.
___ you see her, get on the bus.
a. As soon as
My friend Nancy, ___ lives in Indiana, has a car with an Arizona license.
It's usually quite simple to cross the border between the USA and Mexico ___ these two countries have friendly relations.
He's ___ a jerk ___ nobody likes to be with him.
Do you think this is something ___ can be learned?
c. X (the conjunction can be omitted)
Don't go out ___ you've finished your homework.