In order to let their children receive a better education, parents often have to ______ and for quite a long time.
I love animals and that’s the reason ______ I hate the people who kill wild animals for money.
Professor Li preferred _______ lectures to his students to _______ to meetings on scientific developments.
If you don’t go to see the film this evening, .
He devoted himself _______ to his research and got many achievements.
A great number of visitors ______attracted to my hometown, and the number of foreigners there_____ quite large.