My chemistry teacher isn't tall and short.He's of medium (身高).
When talking to British people, we should (避免) subjects like age, weight or money.
With all her efforts, the children finally (接受) her as one of the family.
A long time ago it was (广泛地) believed that there was life on Mars.
Confidence is an important (条件) if you want to achieve success.
Mr. Sigmund Friend is used to (处理) with all kinds of problems.