Could you play ________ basketball when you were a primary school student? —- No, I couldn’t, but I could play ________ violin.

Do you mind _________your room? —No, I’ll do that after finishing _________this article.

Would you like me to turn down the radio a bit? –______.I’m used to working with the radio on .

John is much shorter than his sister, but he jumps_________she does.

These are ____ erasers,and _____ are white.