Is ___ woman in red your mother? –Yes. She is ____ teacher and works in our school.
Could you help me, Andy? We need ______ tables for the birthday party.
None of us knew what had happened __________ they told us about it.
The poor little girl was found _____ a cold winter night.
There are ________books on my desk. _______books is fifty.
Don’t waste time any more. Wang Jun __________to be the monitor yesterday.