The volunteers for the Shanghai World Expo are busy from dawn ______ dust but they feel very proud of it.
| A．at | B．on | C．till | D．in |
The form cannot be signed by anyone ______ yourself.
| A．rather than | B．better than | C．more than | D．other than |
Some plants can take in carbon dioxide we breathe out and give ______ oxygen to us.
| A．in case | B．in turn | C．in return | D．in addition |
— If you like I can do some shopping for you.
— That’s very kind of you for your ______.
| A．service | B．offer | C．point | D．suggestion |
It’s no longer a question now ______ man can land on the moon.
| A．that | B．which | C．whether | D．what |
It’s said that there are plenty of hotels in that town. There ______ be any difficulty for you to find somewhere to stay.
| A．wouldn’t | B．mustn’t | C．shouldn’t | D．needn’t |