________ do we need ________? (   )

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

I give a gift _____ my mother _____ show my love. ( )

A．to …too…

B．to…to ...

C．too … to…

It’s easy __________ make mistakes in spelling. (   )

A．make

B．to make

C．making

My mother likes ________ in the kitchen. (　　)

A．cook

B．cooks

C．to cook

用所给单词的适当形式填空。
【小题1】Do you know how ____________ (protect) the Earth.
【小题2】What can we do ___________(keep) our city clean?
【小题3】--Look at the sign. You can’t talk here.
--Sorry. We ___________(not see) it just now.
【小题4】He would like____________ (go) shopping with you.
【小题5】What __________（make）the river dirty?
【小题6】Well ________(do), children!