Question

Jane told me she would not attend the conference ______.

A.if she invited                                                B.when inviting

C.unless invited                                                D.while inviting

Answer 1

C

解析:

选项为省略句，当when,while,until,if,unless等连词引导的状语从句的主语与主句的主语相同，从句的主语及部分谓语（be动词）可省略，unless invited =unless she was invited。