---Why do you think he can succeed?---He believes in himself, ____ is the most important, I think.
Harry’s been driving all day----- he be tired.
Unfortunately I was sitting at the table with smokers on side of me.
_____ my cousin is very young, _____ she can help with the housework.
—What did you do on Earth Day this year?—We _____ a show to spread the message about protecting the environment.
—_____ does your father go to the fitness center?—He exercises there twice a week.