Chuyển nhg̃ câu sau thành câu giống nghĩa vs thì hiện tại hoàn thành.
1. I haven't eaten pizza before.
⇒ This is the first time ...................................
2. It started raining an hour ago.
⇒ It has .........................................................
3. The last time she visited me was five years ago.
⇒ We haven't ................................................
4. I last wrote to my uncle in July.
⇒ I haven't ....................................................
5. I have never been to Chicago before.
⇒ This is the first time ...................................