问题描述：
用can't,can,和must来完成下题
1 He doesn't understand.You____speak English.
2 I____come now.I____help my parents.
用at,in,to来完成下题
What are you looking___?
1 He doesn't understand.You____speak English.
2 I____come now.I____help my parents.
用at,in,to来完成下题
What are you looking___?
问题解答：
我来补答展开全文阅读