Question

【题目】【上海市2015年中考英语试题】Martin was so busy ______ the old that he gave up his part-time job.

A.helping B.helped C.to help D. help

Answer 1

【答案】A

【解析】

试题分析：句意：马丁如此忙于帮助老人，以至于他放弃了他的兼职工作。A). helping动词的ingr形式；B). helped动词的过去式；C) .to help 动词不定式；D). help动词原形。be busy doing sth,忙于做某事。结合所给选项的形式，故选A。