Question

【题目】It is necessary for us ___ the listening ability.

A. improve B. to improve C. improving D. improved

Answer 1

【答案】B

【解析】句意：对于我们有必要提高听力能力。考查动词不定时。固定句型：It’s adj. (for sb.) to do sth. ：做某事对于某人来说是什么样子的；结合句意和语境可知选B。