His parents always advised him____ too much time on the computer, but he still sticks to doing it.
| A．don’t spend |
| B．not to spend |
| C．not spending |
| D．to not spend |
Honey, it’s your turn __________ the dishes.
| A．cleaning | B．to clean |
| C．of cleaning | D．to be cleaned |
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 |