He is a model _______ all the children.
Here you are! This is one of the keys ____ the lock.
I can’t ______ Tom. He is a real idiot(白痴).
After three weeks she had got used _____ alone.
Wangmeng won 4 gold medals for China in the winter Olympic Games so we’re proud _____ her.
Chairman Mao, our forever hero, was born _____ December, 1893.