IV
1 friendly
2 celebrations
3 informative
4 pollution
5 relatives
V

1 Hoa doesn't like the noise and the busy roads in the city.
2 Because Lan was sick, he didn't go to school yesterday.
3 How long is the Great Wall?
4 I prefer listening to the radio at home to going to the concert.
5 Can he look after himself when his mother is away? 
6 Mr hoang spent half an hour walking to work yesterday.
7 How much is this cap?
8 Our house is the oldest house in the living centre.
9 Hoa's collection has eight hundred stamps.
10 Our summer vacation lasts two months .
Mk gửi ,chúc bạn học tốt !!!