It is dangerous ____ you ______ a close look at the tiger in the zoo.
| A．for , to have | B．for you, take |
| C．of ,to have | D．of , take |
Checking your answers before handing in your paper can help you __________ mistakes.
| A．make | B．provide | C．avoid | D．advise |
It’s kind __________ Yao Beina to donate her corneas (眼角膜) _________ three people in need.
| A．of; to | B．for; to | C．of; for | D．for; for |
Many people do not realize the importance of health __________ they have fallen ill.
| A．since | B．until | C．while | D．After |
Robin broke his left leg in the basketball match last week, since then he __________ in bed.
| A．lay | B．has lain | C．laid | D．has laid |
— We must act now because time is __________.
— Yes. Let’s start.
| A．cutting down | B．running out |
| C．pushing in | D．handing out |