Look ___ the mess.
A. /B. atC. to
-- What is he doing? -- ___ .
A. He draws a picture.
B. He is read a book.
C. He is listening to music.
-- What are you eating? -- ___ .
A. I eat some sweets.
B. I’m eating some sweets.
C. I eating some sweets.
-- Are you writing a letter? -- _____ .
A. Yes, I do. B. No, I’m not. C. No, I don’t.
-- Are you eating some sweets? -- ___ .
A. Yes, I am. B. No, I don’t. C. Yes, I do.