II. Give the correct form of the verbs in the brackets.
1. How many doors are there in the classroom? - There (be) ___________ one.
2. My school (have) _____________ two floors and my class is on the first floor.
3. Mai and Nga (not listen) ____________________ to music now.
4. Which class are you in? - I (be) _______________ in class 6A.