Question

【题目】Now many people smoke and get ill. So we must do something ____them __smoking.

A. to stop, to B. stop , from C. to stop , from D. stop, to

Answer 1

【答案】C

【解析】句意：现在许多人吸烟并生病，所以我们必须采取措施阻止他们吸烟。根据So we must do something ____them __smoking.可知这里用to引导的不定式短语表示目的，所以排除B、D选项；stop sb.from doing sth.固定搭配“阻止某人做某事”，所以排除A选项；故答案选C。