题干
—What do you usually do after school?
—I ________ swim with my friends.
A：ready
B：ready to
C：ready to do
D：am ready to
答案(点此获取答案解析）
D
—What do you usually do after school?
—I ________ swim with my friends.
A：ready
B：ready to
C：ready to do
D：am ready to
则函数
的反函数是
