1.When did he lose his umbrella?

  Who lost the umbrella yesterday?

   What did he lose yesterday?

2.What are you doing now?

   Who is doing the homework now?

   When are you doing your homework?

3.When did they leave the door open?

   What did they do last night?

   Who left the door open last night?

4.What were you doing at this time yesterday?

   When were you eating dinner?

   Who were eating dinner at this time yesterday?

5.What will she buy the next day?

   Who will buy a new english dictionary the next day?

   When will she buy a a new english dictionary?

6.How did the children go to school?

    Who went to school by bus?

    Where did the children go to by bus?

7.Where is Ann's brother going history?

   Who is going history at university?

   What is Ann's brother going at university?

8.When will Mr.Nam visit his grandparents?

   Who will visit Mr.Nam's grandparents tomorrow?

   Who will Mr.Nam visit tomorrow?

9.Where do they usually play football?

   What do they usually do at this stadium?

   Who usually play football at this stadium?

10.Where was your father working?

     Who was working in a bank?

     What was your father doing in a bank?

11.Who often helps Tom with the homework?

      Who does Tom's mother often help with the homework?

      What does Tom's mother often helps him with?

12.When did Angela do her homework very quickly?

     How did Angela do her homework yesterday?

     Who did Angela's homework very quickly yesterday?

1. When did he lose his umbrella ? 

What did he lose ? 

Who lose the umbrella ?

2. What are you doing now ?

Who is doing your homework now ?
When are you going to do your homework ?
3. Who left the door open last night ?

When did they leave the door open ? 
What did they leave open last night ?

4. When did you eat dinner ? 

Who was eating dinner at this time yesterday ?

What meals did you eat at this time yesterday ? ( meals = bữa ăn )

5. When will she buy a new english dictionary ?

Who will buy a new english dictionary the next day ?

What dictionary will she buy the next day ?

6. How did the children go to school ?

Who went to school by bus ?
Where did the children go to by bus ?
7. Where is Ann's brother going to ?

Who is going to history at university ?

What does Ann's brother doing ?

8. When will Mr.Nam visit his grandparents ? 

Who will Mr. Nam visit tomorrow ?

Who will visit Mr. Nam 's grandparents tomorrow ?

9. Where do they usually play football ?

Who usually play football at this stadium ?
What do they usually do at this stadium ?

10. Where did your father work ?

Who was working in a bank ?

What did your father do in a bank

11. Who often helps Tom with the homework ?

What does Tom's mother often help him for ?
How often does Tom's mother helps him with the homework ?

12. How did Angela do her homework yesterday ?

When did Angela do her homework very quickly ?
Who did her homework very quickly yesterday?