1.First,she_________(work as) a nurse in a hospital and then she left there.
问题描述：
1.First,she_________(work as) a nurse in a hospital and then she left there.
改错.
2.At about 2:00 o'clock in theafternoon,they reached to the station.
3.I was the third student got to school this morning.
4.We are now on the mountain at a altitude of 3450 metres.
5.It's difficult build a tunnel through a mountain.
答
1.had worked as
2.reached the station
3.getting to
4.an altitude of
5.difficult to buildYang Liwei was China's first astronaut _______(go) into space.to go