5 questions
There are ... o'clock in the classroom
one
two
three
four
there ... many student desks neatly arranged
is
are
there is
there are
How many windows are there in that class?
There are three windows in the class
There is three windows in the class
There are seven windows in the class
There is seven windows in the class
There are two blackboards in the classroom!
Are there two vases in your classroom?
Yes, there is
No, there is not
Yes, there are
No, there are not