Something must be done to prevent our city ____ by thick smoke.
I just can’t figure out the meaning of the word---so I’ll have to ___ the dictionary.
Being determined is a kind of quality and that’s ________ it takes to do anything properly.
Before making your speech, you’d better ________ your thoughts and ideas.
—Did you remember to give Jenny the money? —Yes. ________ I saw her, I'm sure.
________ , the idea of having to work under a woman defeated him.