A：How are you，John?

B：I hurt my leg. I rode a horse yesterday and fell off the horse.

A：I'm sorry to hear that.

⑴This is our classroom.{#blank#}1{#/blank#}                   A.

⑵We have a science room on the second floor.{#blank#}2{#/blank#}B.

⑶The gym is on the first floor.{#blank#}3{#/blank#}             C.

⑷Our school is beautiful. I like my school.{#blank#}4{#/blank#}   D.

—Oh, its          are missing.

A.    B.    C.   

D.    E.