Read and choose.
A: (17) __________ your school?
B: It's in the city. It's big.
A: How many buildings (18) __________ at your school?
B: There are three (19) __________.
A: And how many computer rooms are there at your school?
B: There (20) __________ one.
A: Does your school have any gardens?
B: Yes, it (21) __________. It has one garden.