要把下列句子改成疑问句及否定句!1.They all speak Chinese.____________________________________________________________2.We need their help.____________________________________________________________
问题描述：
要把下列句子改成疑问句及否定句!
1.They all speak Chinese.
______________________________
______________________________
2.We need their help.
______________________________
______________________________
答
Do they all speak chinese Then don't all speak chinese
Do we need their help We don't need their help