A:男孩儿长出喉结、胡须
B:身体迅速长高、长壮
C:脸上长出了痘痘
D:将内心封闭起来,却希望得到关心和理解
求证:(a-c)2-b2是负数.
I am _____ to _____ some juice.
读一读,写一写
①— Are there any ____ ?
— Yes, there are.
②There are many tall ____ in my city.
③There is a ____ above the river.
④- Are there any houses in the ____?
-Yes, there are.