1.man and child's shoes ,men's and children's shoes 2.

问题描述:

1.man and child's shoes ,men's and children's shoes 2.
2.letters boxes ,letter boxes 哪个对
3.Bialogy is ___A.the science of the life,B.science of the life

1 man and child's shoes
2 letter boxes
3 选择A

有不明白的地方再问哟,祝你学习进步,更上一层楼! (*^__^*)