单选题 Many animals have lost their ____ because of deforestation.

单选题 Rumor had it that there were rich ____ of gold in the hills. Villagers all swarmed there, leaving the field unattended.

单选题 Can you think of other ways ____ driving cars less often?

单选题 There should be some ____ for the investment in the underdeveloped regions.

单选题 People in the earthquake area were in ____ before the rescue was available.

单选题 It is the police's ____ to maintain order and peace in times of turmoil.

单选题 Do you think the quality of the training school has ____ in recent years?

单选题 The water level in the reservoir is ____ high. The dam is likely to collapse.