题干
.
As I am not feeling well, I really appreciate __________ to take my place.
As I am not feeling well, I really appreciate __________ to take my place.
A：him offer
B：for him to offer
C：his offering
D：him to offer
答案(点此获取答案解析）
C
在
上是减函数，则
的取值范围是（ ）