In salad bars the waiter does not bring you salad. You have to____ yourself, usually to as much as you want.
He smiled politely ________ Mary apologized for her drunken friends.(2012·山东)
________ we have enough evidence,we can't win the case.
He is so busy.He cannot afford enough time with his son________he wants to.
I have heard a lot of good things about you ________ I came back from abroad.
________I have to give a speech,I get extremely nervous before I start.