1.They stopped after they were safe at home.(同义句） They_____stop_____they were safe at home.
问题描述：
1.They stopped after they were safe at home.(同义句） They_____stop_____they were safe at home.
2.They listened but could not understand anything.(同义句）
They listened but could ______ _______.
答
1 didint,until
2 understand nothing