21. People grow rice in many countries in the world.

   Rice …………………………………………………………………………………..

22. Graham Bell invented the telephone many years ago.

->The telephone …………………………………………………………………………

23. They have used this car for many years.

->This car ………………………………….…………………………………………..

24. Lan practices English every day.

-> English ……………………………….…………………………….………………

25. They will take the garbage out of the city.

-> The garbage ……………………………….……………………………………….

26. Mary sent me this letter two days ago.

-> I ……………………………………………….……………………………………

27. People make compost from vegetables.

-> Compost ……………………………………………………………………………

28. You must finish this work before Sunday.

-> This work ……………………………….…….……………………………………

29. She hasn't used this bicycle for a long time.

-> This bicycle……………………………….…………….………………………….

30. I saw a strange man in my garden yesterday.

-> A strange man ………………….…………….…………….………………………

31. They clean the floor every morning.

-> The floor ……………………………….……………..……………………………

32. They will solve the problem soon.

-> The problem ……………………………….………………………………………

33. They break the glass into small pieces.

-> The glass …………………………………….……………………………………

34. They made these cars in the USA.

-> These cars ……………………………….……………………..…………………

35. People have used the Internet all over the world.

-> The Internet ……………………………….………………………………………

36. We planted many trees in the school garden.

-> Many trees ……………………………….…………………..……………………

37. Someone has taken my book away.

-> My book ……………………………….………………………………………….

38. He didn't help me with my homework.

-> I ……………………………….…………………………..………………………

39. We have learnt English for three years.

-> English……………………………….……………………………………………

40. My sister received a letter yesterday .

-> A letter .....................................................................................................................
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