You'd better not phone the manager between 7 and 8 tomorrow evening, because he __________ an important meeting then.
| A．will have | B．would have |
| C．will be having | D．would have had |
We can broaden our horizons through _________ to new things.
| A．hazard | B．exposure | C．recreation | D．vapor |
Jack’s house has been broken into twice and now he takes________ against theft
at any time.
| A．risks | B．chances | C．turns | D．precautions |
The environmental organization calls on customers not to purchase these _______ packages of food, clothes and gifts.
| A．intrusive | B．cognitive |
| C．excessive | D．sensitive |
People are advised not to smoke at home, since passive smoking is ________ topeople around them. Which is Not proper for the blank?
| A．dangerous | B．protective |
| C．hazardous | D．risky |
He stumbled(绊倒)on the _______ ground and fell flat on his face.
| A．undeniable | B．unfair | C．unavoidable | D．uneven |