My mother is not in very good shape and has tennis to get fit.A. filled upB. built upC.

问题补充：

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：

A. filled up

B. built up

(答案→)C. taken up

D. set up

解析：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。