(2012辽宁卷)We used to see each other , but I haven’t head from him since last year.
Don’t respond to any e-mails ______ personal information, no matter how official they look.
I used to quarrel a lot with my parents, but now we ________fine.
The fact that she never apologized ____a lot about what kind of person she is.
Fred entered without knocking and, very out of breath, sank _______ a chair.
--- Is Peter there?--- _____________, please. I’ll see if I can find him for you.