6.She last had a swim five years ago ( viết từ thì HTHT vè QKĐ)
7.They haven't talked to each other for two months ( viết từ thì QKĐ sang thì HTHT)
8.She hasn't seen her elder sister since 1999 ( viết từ thì QKĐ sang thì HTHT)
9.It's years since she last wrote to me ( viết từ thì HTHT vè QKĐ)
10.It's ten years since Roboet and Catherine were married (viết từ thì HTHT vè QKĐ)
