Professor Wang is a friend of mine who works in a ________ school.

When we arrived in the deep night, we found there was no food _______ as all the shops were shut.

It was __of the millionaire not to donate even a penny to charily．

In the eyes of a policeman, it's a usually very dangerous to get close to the _____criminal. He may do anything he would to escape.

So far we have done a lot to build a low—carbon economy, but it is ____ideal. We have to work still harder.