---John, my computer doesn’t work. --- Why not ask Mr. Liu __________ it?A. checking B. to check C. to buy
—I find difficult to learn English grammar. —You can do more English exercises.
Don’t worry about the new words. You can _________in a dictionary.
__________the mooncakes are!
—How do you learn English, Tony? —I often practice English _____ chatting ______ my American friends.
She is a ___________ girl. And she does everything ___________.