睡觉穿堂风的危害:There ....two schools in the city in 1975 .(be)

6．There _______ two concerts in our school next month． There( )a meeting( )two days There ? one or two letters. There are not classes for our school. There are ( )teachers in our school Sometimes there is a checkup___in our school. Sometimes there is a checkup___in our school. There was__time__i hated to go to school There are two (s )on this letter. There ___ two important meetings next week.