—If I work hard at my lessons from now on, can I do well in them?—Sure. ___________.
Do you have other _____ to make on the subject?
Bob doesn’t know _____ to write about.
We must be strict _____ ourselves and strict _____ our work.
Now more and more people prefer__to__in order to reduce the air pollution.
They would rather___colours like orange or yellow than blue or white.