Teachers have to constantly update their knowledge in order to maintain their professional _____.
You____be ashamed of yourselves.You’ve created this problem.
____the quality of schooling is high,parents are eager not only to send their children to school,but also to____them there.
It’s fixed.Never again will your family or friends ____a phone that rings and rings when you’re out.
—We should save some food for____who arrives late.—There’s no need. _____is here.
Bill always seems so self-confident,but _____he’s extremely shy.