【往期回顾】一课一题一语法：新概念英语第2册第77课【答案】1. The girl _has stayed / has been staying_ (stay) in the room alone for thirty minutes.2.
4-An exciting tripI have just received a letter from my brother, Tim. He is in Australia. He has been there for six months.
I am an art student and I paint a lot of pictures. Many people pretend that they understand modern art.
