70

6000

x=27

x=-5/7

a) 2

b) 8

1. favorite

2. useful

3. activites

4. leader

tick cho mình :33

are going to stay

are going to travel

are going to camp

aren't going to take

Is he going to

armchairs 

tables

lamps

couches

bags

houses

clocks

students

policemans

children 

women

windows

countries

villages

cities

towns

lakes

boookshelves

rice paddies

Ex2:

/s/: books,lamps,students,clocks,lakes

/iz/ couches,bookshelves

/z/: còn lại

Ex3;

plays

watches 

does

listens

reads

gets

brushes

washes

Ex 4:

/s/: gets

/iz/: watches, brushes, washes 

/z/ còn lại

tick cho mình :33

A