【题目】The luck fairy wished Fred and Doris________(healthy) and _______(happy) forever.

【题目】The boss made my mother __________ twelve hours a day in old days.

【题目】—What's the cost of the dictionary? —_________ is sixty-three.

【题目】Foreigners in Beijing learn Chinese language __________ its culture.

【题目】He _______ every Saturday morning _______ in an animal hospital.

【题目】The government warned the factories _____the water again.

【题目】When the boy heard the news, he cried_________(sad).

【题目】Are these tigers __________ great danger?

【题目】I know that trees can communicate __________ one another.

【题目】It is_________(comfortable) to live in such a small house without air-conditioners in hot weather.