Viết lại câu :
1. My mother helped me do that .you met her last Friday(relative pronoun)
->…………………………………………………………………………….…………………..
2. These books are very interesting. I borrowed them from the library. (relative pronoun)
->…………………………………………………….……………………………………………..
3. Max isn’t home yet. That worried me. (relative pronoun)
1. My mother, whom you met last Friday, helped me do that.
2. These books, which I borrowed from the library, are very interesting.
3. Max isn’t home yet, which worried me.
1. My mother whom you met last Friday helped me do that.
2.These books which i borrowed from the library are very interesting.
3. That worried me why Max isn’t home yet