1. What did she do when hen brother was studying?

(What + to be + S + do/does + O)

2. How long has he slept?

(How long + have/has + S + V)

3. How many times can a milk bottle be reused?

(How + many/much + S + can/could + S + O )

4. What time is the park locked?

(What time/when + to be + S + O)

5. How often is the room cleaned?

(How often + to be + S + O)

6. Where did your uncle move in 2002?

(Where + to be + S + O)

1. When did she enter when her brother is studying? (Hỏi thời gian)

2. How long did he sleep? (Hỏi bao lâu)

3. ghi rõ đề nha: A milk bottle can be reused thirty times.

How many times can this milk bottle be used? (Hỏi bao nhiêu)

4. The park is ????ed at 6.30pm

When does the park ????(hiện tại)?

5. How often is the room cleaned? (Hỏi thường xuyên)

6. When did your uncle move to HCMC? (Các câu trả lời chủ ngữ "I" được hỏi bằng "you" để hỏi người nói "I" | Hỏi khi nào)