I 

have ⇒ has 

go ⇒ goes

meet ⇒ meets

play ⇒ play

watch ⇒ watches

listen ⇒ listens

visit ⇒ visits

have ⇒ have

II

1. a. badminton

2. d. snack

3. b. arts

4. d. tennis

5. d. write

6. a. eat

III 

1. How many teachers are there in your school ?

2. Mary and Jane are students at school

3. His school isn't small , it is big in the city

4. How many classrooms are there in Phong's school?

5. My school has fourth floor and my classroom is in the second floor

I) a) gets up      b) has        c)goes   d)meets          e) plays       f) watches       h) listen        g) visits           i) have

II) 1, a       2,d       3,b        4,d      5,d         6, a

III) 1, How many  tearchers are there in school ?

     2, Mary and Jane are students at school.

     3, His school isn't small , it is big in the city.

     4, How many classroom are there in Phong's school.

      5, My school has four floors and my classroom in the second floor.