问题描述：
He comes from America.换一种说法
He comes from America.
He is a -------- --------America.
The boy is very young and he can't carry the heavy box.
The box is --------heavy for the boy ------- carry.
He comes from America.
He is a -------- --------America.
The boy is very young and he can't carry the heavy box.
The box is --------heavy for the boy ------- carry.
问题解答：
我来补答展开全文阅读