问题描述：
这对双胞胎很像,我说不出她们对的不同之处.The twins look the same.I can't _ _ _ _ them.
We always do _(us) best to help the children in poor areas.
I heard from my penfriend in the USA last month(同义句)
I _ _ _ _ my penfriend in the USAlast month.
We always do _(us) best to help the children in poor areas.
I heard from my penfriend in the USA last month(同义句)
I _ _ _ _ my penfriend in the USAlast month.
问题解答：
我来补答展开全文阅读