用and,but,so填空
1.Boating is fun._______it is too slow.
2.They teach us Chinese_______we teach them English.
3.It will rain this afternoon,_______I lake my umdrella wiht me.
4.Billy can make hamburgers,_______he can't make salsd.
5.Idon'tnkow her address,_______I con't write to her.