---Look! The light is still on. Is Mr Wu working in his office?---No, it _____ be Mr Wu. He has gone to Nanjing for a meeting.
Mary practices Chinese every day, so her Chinese is good now.
I have quite friends. I feel very happy.
Do you enjoy ________ photos?
— _____ Dasan is from Canada, he can speak Chinese very well.— I know he studies Chinese hard.
My sister is only two years old, and I have to _____ her on Sunday. A. look for B. look after C. look like D look at