11. How much does it cost for the coat?

12. How much is it for the coat?

13.What is the hight of the Big Ben Clock Tower?

14.How much does it cost for this face mask?

15.You don't need to finish work today.

16. He doesn't need to study hard.

17.You need to do homework

18.It is very interesting to go swimming in the summer.

19.Learning Einglish well is neceessary.

20.We are interested playing football very much.

=>
11. How much is this coat?
12. How much is this coat?
13. What is Big Ben Clock Tower's height?
14. How much does this face mask cost?
15. You don't have to finish the work today.
16. He doesn't have to study hard.
17. You have to do homework./ You need to do homework.
18. It's very interesting to go swimming in the summer.
19. Learning English well is necessary.
20. We are interested in playing football.