—Is Pro. Smith giving the speech today?—It __________ be him. He is abroad right now.
The teacher _____ the students how to improve their writing skill since last term.
______I open my mouth, I put my food in it.
The computer system suddenly_____ while he was searching for information on the Internet.
-----How far apart do Tom and Jack live?-----______I know, they live in the same neighborhood.
-----Would you please repeat it?-----Obviously, you _____me.