Sometimes we should      roles so that we can understand each other’s difficulties, thus promoting our cooperation.

“You ___ to think for youself , you are to carry out my orders.”

Young people always look into the future, while old people like to look back into the past. This is ______ both men and women.

The teacher stressed again that the students should not _________ any important details        while retelling the story.

— What happened then? — The Red Army _____ the bridge after they crossed it.