A:Yes, I am.
B:No, she can't.
C:Sorry, I can't.
There are many old people _______ are taking a walk in the park.
同学们一定很熟悉26个英文字母吧,在这26个字母中也有一些是轴对称图形,你能找出这些字母吗?(按英文字母的顺序填写)