Nowadays, teachers should give less homework to students in order to ______ the amount of pressure they have.
________there are a large number of chemical factories, the air is likely to be polluted.
They weighed the advantages of the operation ______ all the possible risks involved over and over again.
The young man has been trying everything in his power to please the director, ______ to get a role in the play.
Sometimes we just can’t understand why so many people fail to realize that wealth does not ______ bring happiness?
Research shows that though students benefit from having parents involved at school, _____ happens at home matters much more.