Câu 4:

1. Falling is commons type of accident for young children at home

2. Make sure he or she can't open any windows

3. A child may fall down the stairs

4. Make sure he or she can't roll of the bed

Câu 5 :

2. Is cooking 

3. am

4. climbed

5. fall / break

6. is running

7. toothache / has to go 

8.  washes

9. has

10. ride

câu 6 : 

a . Why shouldn't I play with the knife ?

- Because you may cut yourself  

b Why shouldn't I play with stove ?

- Because you may get a burn

C. Why shouldn't I ride too fast ?

- Because you may fall off your bike

D . Why shouldn't I run down the stairs ?

- Because you may break your arm

câu 4:

1. Falling is commons type of accident for young children at home

2. Make sure he or she can't open any windows

3. A child may fall down the stairs

4. Make sure he or she can't roll of the bed

Câu 5 :

2. Is cooking 

3. am

4. climbed

5. fall / break

6. is running

7. toothache / has to go 

8.  washes

9. has

10. ride

câu 6 : 

a . Why shouldn't I play with the knife ?

- Because you may cut yourself  

b Why shouldn't I play with stove ?

- Because you may get a burn

C. Why shouldn't I ride too fast ?

- Because you may fall off your bike

D . Why shouldn't I run down the stairs ?

- Because you may break your arm