Question

【题目】I regret ______ to come to your birthday party yesterday.

A. to be unable B. not to be able

C. being unable D. being not able

Answer 1

【答案】C

【解析】

考查固定结构。本题采用的句型为regret doing sth.：遗憾（后悔）作某事；还用到了be able to do sth的否定句be unable to do sth.未能作某事。句意：我很遗憾昨天没能参加你的生日会。故选C。