Mr. Gates is now ______ the company. If you have any questions, you can dial the number.
He is the only one of the students who __________a winner of scholarship for three years.
The snowstorm ________ our difficulties.
Thomas wants to know ______Nina lives.
—Did you see Peter and Mike? — No, I saw ______of them.
When you don’t know a word, you can _________ in the dictionary.