I. 1-e 2-a 3-f 4-d 5-b 6-c

II. 1. what   2. my   3. a   4. shall   5. in   6. it   7. a   8. with us    9. to    10. at   11. to   12. of    13. that's    14. see  15. Marry.

III 1.C 

2.D

3A

4A

IV. 

1. Let's go to the cafeteria and have a glass of lemon juice, Mai.

2. Nam is learning to play the piano in the music room.

3. We practise our English every day to be good at it.

4. I am going to join the stamp collector's club.

5. They are rehearsing a play with their school theater group.

6. David has a large collection of British stamps.

7. The orchestra is going to give a concert at our school anniversary celebrations.

8. I and Mary often collect stamps together.

V.

1. Who is going to be the president of the stamp collector's club?

2. Do you meer your friends and talk about our stamps on Saturday afternoon?

3. Which is Lan and Chi's favorite pastime, collecting stamps or acting?

4. Where are Tuan and his classmates rehearsing a play?

5. What does Nam like very much?

6. Is acting Lucy's favourite pastime?

7. How does Lan play the violin?

VIII.

1 of   2 are   3 group   4 such     5 a    6 play   7 going    8 to   9 from   

IX.

1 I am John's American pen friend

2 Hoa is a member of the school orchestra

3 David joins in his class theater 

4 We are going to be a member of the stamp collector's club

5 Lan plays for the school badminton tea

X

1 They take part in the activities eagerly

2 Lucy and Jane