Giúp mik câu 1 với ạ
1 had done - went
2 arrived - had left
3 had been working - decided
7 arrived - had run
4 had walked - came
5 found - had been searching
6 waited - had decided
Tổng hợp các thì trong tiếng anh: https://vndoc.com/tong-hop-cac-thi-trong-tieng-anh-cong-thuc-cach-su-dung-dau-hieu-nhan-biet-95881