`1.` How long has she worked in this company?

- for ten years `->` How long

`2. `Who are your best friends?

- Linh and Peter `->` Who

`3.` When does he always go to the park? 

- When he feels sad `->` When

`4. `When did you meet him?

- In 2003 `->` When

`5.` What is her dad doing in his bedroom?

`6.` How far is it from the school to the market?

- How far is it + from + N(địa điểm) + to + N(địa điểm) + ...?

`7.` Where will Kate and her friends meet each other?

- at the cinema `->` Where

`8.` What did the doctor tell you to drink?

`9.` When do our classes start?

- At 7a.m` ->` When

`10.` How many students are there in this hall?

1. How long she has worked in this company

Vì : gạch chân ở : For ten years => How long

2.Who are your best friend

Vì : gạch chân ở : Linda and Peter => Who

                            My                     => Your

3.When does he always go to the park? 

Vì : gạch chân ở : When he feels sad ⇒ When

4.When did you meet him?

Vì : gạch chân ở : In 2003 ⇒ When ( chỉ tgian )

5.What is her dad doing in his bedroom?

Vì : gạch chân ở : Is reading a book ⇒ What ( chỉ hoạt động )

6. How far is it from the school to the market?

Vì : gạch chân ở : about ten kilometres ⇒ How far ( chỉ khoảng cách )

7.Where will Kate and her friends meet each other?

Vì : gạch chân ở : at the cinema ⇒ Where ( chỉ nơi ở , vị trí )

8.What did the doctor tell you to drink?

Vì gạch chân ở : this kind of medicine ⇒ What

9. When do our classes start? 

Vì : gạch chân ở :  at 7a.m ⇒ When ( chỉ tgian )

10.How many students are there in this hall?

Vì gạch chân ở : 50 students => How many ( chỉ số lluowngj )