PHẦN1
1 c                                       10c 
2a                                         11c
3a                                             12d
4c                                         13 b
5d                                        14 b
7b                                          15a
PHẦN 2
1 interest 
2 collecting
3music
4
.......
6collect
7more expensive
PHẦN 3
1 have a big library
2well at marth
3best subject ?
4 go swimming ?
5 what is tasty of the cake?
6 chưa biết
7 less hours than Nam
8 Nile river is longest river in the world
9 five thousand books in the school
10 many interesting places in HN