—Areyoufreethisevening? —Sorry,I’vepromisedtohaveMary’...
来源：语文精选馆 2.24W
问题详情：
—Are you free this evening?
—Sorry, I’ve promised to have Mary’s radio repaired ____ for her help with my
English.
A. in relief B. in return C. in turn D. in fact
【回答】
B
知识点：介词
题型：选择题
