-- Are the books ________? -- No, they belong to ________.
All the adults were killed in the accident, but the two-year-old boy______ alive.
We all like playing sports, so ______ students ______ basketball every day.
The water is not ______. Add some more sugar, please.
The MP3 is used for _______ music.
–Where is my pen?--Oh, sorry, I have taken yours ____mistake.