—David,is that man your Chinese teacher?—It___________ be him.He’s having a meeting.
You are right. We all agree _______ you.
He is _______ small _______ to school.
I _______ a museum with my friends at this time yesterday.
Henry usually watches games________ television.A. from B. on C. about
There are_________ letters in English.A. 26 B. 23 C. 21