1.I ( talk) on the phone when he (come) 2. He doesn't know what (do). 3. What she (do) at 7 o'clock yesterday? 4. I (read ) a book when they (arrive). 5. How long he (live) here ? For over ten years. 6 . He doesn't know where (go) 7.When the teacher ( come), we (make) noise.

1. talk/ came

⇒ vì cs when nên là thì QKĐ

2. do

⇒ Anh ấy không biết phải làm gì.

3. did she do

⇒ vì cs yesterday nên à thì QKĐ mà là câu nghi vấn

4.read/arrive

⇒ vì cs when nên là thì QKĐ

5. has he live

⇒ vì cs For over ten years nên là thì HTHT

6. go

⇒ Anh ấy không biết đi đâu

7. came/ make

⇒ vì cs when nên là thì QKĐ

    # đây nka. Cho ctlhn, 5 soa và tim nhé. Cảm ơn :3

                               ❤Chúc bn hok tốt❤

1. I was talking on the phone when he came.

`->`  vì when là quá khứ đơn nên (come `->` came)

2. He doesn't know what to do.

3. What was she doing at 7 o'clock yesterday?

4. I was reading a book when they arrived.

`=>` Tương tự câu 1 . vì when / was / were là thì quá khứ đơn nên + $V_3/_ed$

5. How long has he lived here?

6. He doesn't know where to go

7. When the teacher came, they were making noise.