—What a nice classroom! —It _____ every day. A.is cleaning B.has cleaned C. is cleaned
I was out of town at that time, so I didn't know exactly_____.
It may not be a good idea. But before ____is put forward, we'll make do with it.
—Remember, boys and girls. ______ you work, ______ result you will get.
There is ______with your camera. Why not have it________ ?
______of the students in our class______ able to play computer games well.