---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
Plastic bags are provided for our convenience but they have also_______ the pollution of the environment．
A．adapted to B．turned to C．contributed to D．looked forwarded to
Tom sounds very much in the job, but I’m not sure whether he can manage it．
A．interested B．interesting C．interestingly D．interestedly
I along the street looking for a place to park when the accident________．
A．went; was occurring B．went; occurred
C．was going; occurred D．was going; had occurred
That was really a splendid evening．It’s years ______ I enjoyed myself so much．
A．when B．that C．before D．since
The manager had fallen asleep where he ______, without undressing．
A．was laying B．was lying C．had laid D．had lied
