._______________ you have finished your work,you might as well relax yourself now.

—Hello, can I speak to Mr. Smith?
—I’m sorry, but it is 3 weeks _____ he worked here.

You can borrow my car ________ you promise not to drive too fast.

You can go out,   you promise to be back before 10 o’clock.

His friends ignored his advice, ______ they knew it to be helpful.

I arrived half an hour earlier ______ I had time to talk with him before the meeting.

We were ______ surprised at the news that we couldn’t say anything.

______ he has made up his mind, no one can make him change it.

I will not go to her birthday party ___________ I am invited.

Today,_________ rapid transportation and communication , the whole world seems to be smaller.