【题目】I want to employ a college student who is good at English and math and has lots of spare time to teach my son. __________, he or she must have a sense of responsibility.
A. Above all B. All in all
C. After all D. In all
在线课程【答案】 A
【解析】
试题分析：考查固定短语。我想聘请一个擅长英语和数学的大学生，有很多空闲时间来教我的儿子，首先，他或她必须有责任感。A首先B总而言之C毕竟D总共。故选A。