Most of the students haven’t finished their papers on time for __________reasons---one of which was that they carried out a week-long investigation in the countryside.
| A．previous | B．accurate |
| C．original | D．various |
“Hey, look where you are going！” “Oh, I’m terribly sorry. _____.”
| A．I’m not noticing | B．I wasn’t noticing |
| C．I haven’t noticed | D．I don’t notice |
“Mr Smith isn’t coming tonight.” “ But he _____.”
| A．promises | B．promised |
| C．will promise | D．had promised |
. Dear me！ Just _____ at the time！ I _____ no idea it was so late.
| A．look, have | B．looking, had |
| C．look, had | D．looking, have |
The traffic accident wouldn’t have happened yesterday, but the driver _______ really careless.
| A．was | B．is |
| C．were | D．had been |
I had expected to come over to see you last night, but someone ______ and I couldn’t get away.
| A．called | B．had called |
| C．would call | D．would have called |