电子课本网 第157页

第157页

信息发布者:
have left
communicating
will move
Three. 
Communicating with the local people. 
No, it isn't.
It gives us a sense of safety./They can give us help.
No. Because I want to decide everything by myself. (答案不唯一)
(更多请点击查看作业精灵详解)