防止行政机关自由裁量权的滥用是行政合法性原则的基本要求。
参考答案：错
在一个请示中可以述及多种事项。 ( )
My mother is not in very good shape, and he has _____ tennis to get fit. [ ]
A. filled up
B. built up
C. taken up
D. set up
