30. B     31.B     32.B     33.D     34. C     35.A     36. C     37. C    38. B    39. C    40. A    41. C     43. B    44.B      45. D   46. D    47. A    48. A     49. B

* Make question

1. How many students are there in your classroom?

2. What is your brother doing in his bedroom?

3. Where does your family usually go to in this summer vacation?

4. How can her child often go to the club?

5. who is your favourite singer?

6. How long does the show last ?

* Rewrite

1. Because I had a bad cold, I didnot go to shool.

2. Although Lan can sing very well, she cannot play the piano.

3. Tea is the  most popular drink in London.