I love the Internet. I’ve come to know many friendson the Net.—_______ .Few of them would become your realfriends.

It’s thirty years since we last met.-But I still remember the story,believe it or not,_____we gotlost on a rainy night.[ ]

______ their homework, these three studentshave to stay in the classroom for another thirty minutes.

You’d better take some medicine with you before you leave ______ someone gets sick

If he comes back from work, I’ll tell him when _______ and visit him. [ ]