36. Mai likes this cartoon because it's very interesting.
-> why does Mai like this cartoon?
37. Flowers will clean the floor.
→ Who will clean the house?
38. They were at the fair yesterday.
-> What did you do yesterday at school?
39. It is 300 km from his hometown to Hanoi.
-> How much is it from your hometown to Hanoi?
40. Yes. There is a picture on the wall.
-> Is there a picture on the wall?