I, Give the plural form of these words

1. door=> doors

2. shelf=> shelves

3. desk=> desks

4. board=> boards

5. house=> houses

6. boy=> boys

7. glass=> glasses

8. family=> families

9. student=> students  

10. bench=> benches

II, Divide the about plural nouns into 3 groups according to the pronunciation of "s" and "es" 

                          3 nhóm phát âm số nhiều: 

1.Phát âm /s/ khi âm cuối là các âm vô thanh:f,k,p,t,∅

Example : laughs ,books ,hopes ,...

2.Phát âm /ɪz/ khi âm cuối là các âm s,c,x,z,ss,ch,sh,ge

Example : races ,fixes,misses,...

3. Phát âm là /z/ khi các âm cuối là các âm hữu thanh(b,d,g,l,m,n,r,v,ng,y,the)và các nguyên âm

Example : belongs,clothes,fleas,...

III, Write complete questions and give the answer using the words given

Example: that/television -> What's that? -It's a television

1. this/bookshelf -> What's this? - It's a bookshelf

2. these/stools ->What are these? - They are stools

3. that/desk ->What's that? - It's a desk

4. those/armchairs -> What are those? - They are armchairs

5. that/lamp -> What's that? - It's a lamp

6. these/stereos -> What are these? - They are stereos

I)

1 . doors

2 . shelves

3 . desks

4 . boards

5 . houses

6 . boys

7 . glasses

8 . families

9 . students

10 . benches