Vì bài I cần có máy nghe nên mk chỉ làm phần còn lại thôi nhé
II/
1/ teenagers
2/themselves
3/language
4/enough
5/ work
writing/
I/
1/ She told me that she has gone to London with her friends last year.
2/ Lan has studied English for ten years.
3/ A bridge is built by the workers at present.
4/ She said that we couldn't smoke in the house.
5/ If he were lazy, he would failed the test.