If you intend to arouse students’ interest in your project, you’d better ______ your teaching methods more wisely.
You should correct all the mistakes as soon as possible before the book _____.
How can they learn anything _____ they spend all their spare time watching television?
We congratulated Jerry ____ the championship.
It took my father half an hour to finish ____ my bike.
Most students in my class are never _____ in the morning classes.