Chữa lỗi sai
1,she has went to visit Susan. She'll be back tomorrow
2,I didn't done any volunteer work lately
3,Matha is a great cooker and she often cooks dinner for homeless people
4,Kim hasn't seen the film already, so don't tell her how it ends
5,She has donated a lot of money for local charities
6,Before donate a book, make sure that it is in good condition
7,We should encourage people recycle glass, cans, plastic and paper