ài 1: Viết lại các câu sau đây sử dụng thì hiện tại hoàn thành.

1. I haven’t met my best friend since I was 18 years old.

→ I last …

1. My children haven’t been taken to the supermarket since they were in grade 5.

→ The last time…

1. When did you start waiting for the train?

→How long…

1. They started studying Spanish and Chinese 5 years ago.

→ They have…

1. My younger sister has not had her hair cut for over five months.

→ It’s…

1. My friend has never seen such a beautiful girl in his life.

→ This is the first time…

1. John hasn't played piano since 2015.

→ The last time…

1. We have never met such a kind person before.

→ It’s the first time…

1. Have you traveled to Thailand before?

→ Is this…

1. The last time I saw my father was 10 years ago.

→ I have…