He was able to play the piano________the age of four.[ ]

What did you do yesterday?—My brother took two friends of ________ to play chess with us. But I don’t’ know _______ of them.

Your shirt matches _____your pants.[ ]

Hot water_____ in the students’ flats from 5 pm to 7 pm now.

There is a river around our town. It is about ______ long.