I don’t feel a bit tired, although I ________ for a whole day without a minute's rest．

1. A.
   work
2. B.
   am working
3. C.
   have worked
4. D.
   have been working

-- What were you up to when she dropped in?

   -- I _____ for a while and _____ some reading.

  A. had played; was going to do       B. played; did

  C.  was playing; was going to do     D. had played; did

—Why do you want to work for our company?
—This is the job that I ______for.

— Why weren't you at the meeting?

　　　　— I ________ for a long distance call from my sister in America.

　　A. was waited　　　　　　　　　　B. was waiting

　　C. has waited　　　　　　　　　　 D. have been waiting

---Where were you when I called at your house this morning?

   ---Oh, I_____ for a friend from Tokyo at the airport．

     A．had waited          B．am waiting          C．have waited         D．was waiting