There are few students in the classroom at noon,___?

There are few students in the classroom at noon,___?
A.isn't B.aren't there C.is there D.qre there
It ____me twenty pounds to buy this picture book.
A.took B.spent C.paid D.cost
-could i park here?
-_______
A.no,you couldn't B.no,you can't C.no,thanks.D.sorry,you couldn't