We have _____ new light.
A. anB. aC. the

Where is my book ?—It’s ______the floor.
A.onB. inC.at

This is _____ new classroom.
A.our B.we C.us

let ′s go and havelook.
A.a B.an C.the

There is ______ picture on the wall.
A.aB.an C.the