----Look at the boy running on the playground. Is it David? ---- It ______ be him. I saw him go to the teachers’ office just now.

Your pocket money can be used to _____ charity, you used to _______ a lot on snacks.

--- Did you watch the snooker game yesterday? -- Yes, I did. Xiao Guodong is really a dark horse. Nobody _______ him to go so far.

I ________ shy. Doing projects with others has helped me become outgoing (外向的).

 —Where ______ my shoes?—Under the chair.