问题
选择题
My mother is not in very good shape, and has ____ tennis to get fit.
A．filled up
B．built up
C．taken up
D．set up
答案
答案：C
考查短语辨析。filled up 填满，built up 加强，taken up 从事，set up 建立，句意：我的母亲身材不是很好，从事网球运动来保持健康。所以选C。