How much do you know about the 3D film technology?—A little. Not until ______ the hot movie Avatar ______ some about it. [ ]

Could you _______ me your bike, please—Sorry, I’m using it. You can _______ Jack’s.

Excuse me, what is on the wall of the classroom— Oh, ______ a blackboard , two doors and five windows.

______ I had done it I knew I had made a mistake.

______ did you do on Sunday, Kate —I watched TV.