________ do we need ________? (   )

A．What; to buy	B．When; to buy
C．How; to buy	D．Where; to buy

________ your favourite colour? (    )

A．What

B．What's

C．How

—______ are you doing? ( )
—I’m washing clothes.

A．Who

B．What

C．Where

Read and write（读一读，填上合适的内容，使句子通顺）
【小题1】—______ are the pupils? —They’re on the grass.
【小题2】—______ is your brother? —He’s very well.
【小题3】—______ are you? —I’m Mary’s sister.
【小题4】—______ can your friends do?    —They can make sandcastles.
【小题5】—______ is the boy?   —He’s ten years old.

—______ do you usually do every evening? (  )
—I usually play computer games.

A．Where

B．When

C．What