_______ to the sunlight for too long will do harm to your skin.
| A．Exposing | B．Exposed | C．Being exposed | D．Having exposed |
A person who has never tasted bitter won’t know ______ sweet is.
| A．which | B．what | C．when | D．why |
The order came that the medical supplies to Beijing for the H1N1 flu soon.
| A．would be sent | B．should send |
| C．be sent | D．must be sent |
— The professor gave a really good speech.
— I suggest you ______ him some specific questions about his work experience.
| A．have asked | B．will ask | C．asked | D．ask |
The agent promised to keep the family members fully ______ of any developments.
| A．inform | B．Informing |
| C．informed | D．being informed |
Jack ________ have fought with the policeman.
—Yes. If one ________ ask for trouble, it can’t be helped.
| A．would; will | B．must; may |
| C．should; must | D．need; dare |