A car had a head-on _______ with a truck on the highway yesterday, killing 2 and injuring 3.
| A．contest | B．collision | C．conflict | D．separation |
Children’s brains can’t develop properly_______ they lack protein(蛋白质).
| A．when | B．since | C．because | D．unless |
With all his attention ____ on the computer game, the boy even didn't notice his mother came in.
| A．was fixing | B．was fixed | C．fixing | D．fixed |
Though ______ of danger, sightseers have been flocking to the site where the world’s biggest terrorist Bin Laden lived.
| A．warned | B．warning | C．being warned | D．having warned |
----- You should have finished your homework, I gave your much time.
----- Sorry, but I_____ it.
| A．had forgotten | B．forgot | C．was forgotten | D．forget |
—Mr．Anderson is popular with his students, for he is kind, strict and knowledgeable．
—No wonder he has such a good ___．
| A．expectation | B．contribution | C．reputation | D．regulation |