问题详情：
I won’t go to tomorrow’s party________ I am invited.
A. if B. unless C. When e
【回答】
B 考连词的意思。If “如果”；unless “除非”；when“当......时候”。
——Are you sure he is able to do the work well?
——______ he would give his mind to it.
case only l ss
*D
知识点：连词
题型：选择题
