My study of biology has ___C___ much of my spare time, but it has given me a great deal of enjoyment.
— Are you cleaning my room, Lily?— ______. I can’t bear seeing your room in a mess!
The findings support another study which showed that being happy ______ reduce the risk of heart disease.
If you want to get your ability ______, you have to show it in your work rather than complain all day.
It is believed that high achievers are ambitious, hard working, and work toward personal standards of excellence ______ material rewards.
There is a common belief among the students in our school ______ they should try their best to learn and reach the peak of their academic performances.