They wanted to charge $5,000 for the car, ________we managed to bring the price down.
| A．but | B．so | C．when | D．since |
Hawking is known _________ the greatest scientist alive.
| A．of | B．for | C．as | D．to |
“China is still a developing country ___________.” said Premier Li at the conference.
| A．at present | B．for present |
| C．to present | D．to now |
The policeman warned us ___________ believe such liars again.
| A．not | B．don’t |
| C．didn’t | D．not to |
I am sure that if you _____________ your time, you’ll achieve greater success.
| A．make full use o | B．take use of |
| C．use up | D．are used to |
He got home late ____________ the traffic was heavy.
| A．because that | B．because |
| C．because of | D．in order that |