单选题 No matter how successful we are or how much we have achieved so far, we shouldn't get _ since there are more difficulties ahead of us.

单选题 He was very much interested in the work of charities, and made a regular _ to them.

单选题 The vast majority of people in any given culture will _ to the established standards of that culture.

单选题 Cell phone conversations, which are fairy _ on commuter trains, can be annoying to fellow commuters.

单选题 Recently a number of voluntary initiatives have sought to _ a sense of belonging to the community on the part of young people.

单选题 It advises artists to _ from smoking or eating while painting, to use face masks and to provide adequate ventilation (通风) by means of an extractor fan.

单选题 If a policy does not _ with a society's values, the likelihood of success diminishes.

单选题 Even though you've treated us rudely, we'll play _ with you, give you a chance to buy something you need.