6.are checking
7.Is your grandmother looking
8.Are they trying
9.isn't walking
10.is making
 

11.are you doing
12.are working
13.isn't listening
14.is sitting
15.are you studying
16.isn't ringing
17.is eating

đây

1.are singing
2.is flying
3.is going
4.is carrying
5.Are you doing
6.are checking
7.Is your grandmother looking
8.Are they trying
9.isn't walking
10.is making
11.are you doing
12.are working
13.isn't listening
14.is sitting
15.are you studying
16.isn't ringing
17.is eating

1. Listen to the birds. They are singing.
2. Look at that one. It is flying high in the sky.
3. Look! Sara is going to the movie.
4. On her right hand, Sara is carrying her handbag. 
5. Are you doing the washing up?
6. They are checking the printers. 
7. Is your grandmother looking at birds?
8. Are they trying to help?
​9. She don't walk to the center of town.
10. Look! Steve's mother is making a cup of coffee. 
11. What are you doing tonight? 
12. Jack and Peter work late today. 
13. Silvia ddoes't listen to music.
14. Maria is sitting next to the Paul.
15. How many other students are you studying with? 
16. The phone isn't ringing.
17. John is eating salad, and I am eating fish