---Where is my new football shoes, Mum? I need them to play football with my friends. ---I haven’t seen them. You ____ somewhere in your room.
We used to work in the same office and we _________ have coffee together.
_____ all the inventions have in common is ______ they have succeeded.
The new machine,if _________ properly,will work at least ten years.
—What were you doing when the telephone rang?—I ______ away my books and ______ to bed.
I thought Jim would say something about his school report,but he ______ it.