Without the 
air to hold some of the sun’s heat, the earth at night ____ for us to live.
| A．would be freezing cold | B．will be freezing coldly |
| C．would be frozen cold | D．can freeze coldly |
—I say, Harry. What did you say to the laid-off worker just now?
—Nothing. I to myself.
| A．had only talked | B．am only talking | C．have just talked | D．was just talking |
It was not until the 18th century that man realized that the whole of the brain was involved in the working of the mind， ？
| A．was it | B．wasn’t it | C．did they | D．didn’t they |
I think you’ve got to the point a change is needed , otherwise you’ll fail .
| A．when | B．which | C．where | D．there |
I thought Father would be better, but ______it is, he is getting worse, which makes me more worried.
| A．before | B．as | C．because | D．after |
Where have you been ?
— I_______in the heavy traffic .Otherwise I_______ here earlier.
| A．have got stuck; would have come | B．got stuck; was |
| C．got stuck ; would have come | D．had stuck ; would come |