—Is Mr. Smith over there?—It ________ be him. He has gone to Beijing on business.
He is ________ his pen, but he can't ________ it.
I like snacks but I do not eat them______.
There are two ____ and three ___ , they are talking about something.
He never does some sports, it is time for him ________now.
I need some ________ and ________.