Question

【题目】—My father keeps . That’s harmful.

—You should try your best him.

A. on smoking; to prevent B. to smoke; preventing C. smoking; prevent

Answer 1

【答案】A

【解析】句意：－我爸爸坚持抽烟。那有害。－你应该尽力阻止他。坚持/持续做某事：keep doing sth或keep on doing sth；Ｂ错；尽某人最大努力做某事：try one’s best to do sth.Ｃ错。故选Ａ。