——You are not a new comer, are you?
—— . I came here only yesterday.
| A．No, I am | B．Yes, I am | C．No, I’m not | D．Yes, I’m not. |
We can’t ______ the car.There ______ something wrong with the engine.
| A．drive;must be | B．start;must be |
| C．start;has | D．begin;must have |
Jane told me she would not attend the conference ______.
| A．if she invited | B．when inviting |
| C．unless invited | D．while inviting |
Without facts,we cannot form a worthwhile opinion,for we need to have factual knowledge ______ our thinking.
| A．upon which to base | B．which to be based on |
| C．which to base on | D．to which to be based on |
They said that they ______ a wonderful time in Beijing and they hoped to be there again.
| A．had | B．would have |
| C．would have had | D．could have |
______ so much electrical equipment,wood and paper in one place,there is a danger of fire.
| A．For | B．In | C．With | D．By |