—Yesterday I lost my pencil sharpener. I couldn’t find_______.—Oh, it’s a pity. You’d better buy ________ this afternoon.
We can go to a _______ to mail things.
Let’s play computer games _______ a while.
—Where is your CD? —It’s _____ the Walkman.
Kangkang usually goes to school by _______.
It’s time _____ school.