问题
选择题
She ___ for the professor who was ill.
A．substituted
B．changed
C．shifted
D．replaced
答案
答案：A
动词辨析. A. 代替;取代 B. 改变 C. 转移;替换 D.取代；替换。replace 和substitute都可作动词，但用法不一样，一般搭配是replace A with B 用B来代替A；substitute A for B 用A来代替B 。故选A。