There are eighteen _________ in our class .

A．girl

B．boy

C．girls

This is my _____.(  )

A．head

B．hands

用所给词的适当形式填空。
【小题1】What did the doctor _______________（say）yesterday?
【小题2】The girl ___________（take）exercise every morning.
【小题3】We should sleep at least 8 __________（hour）each night.
【小题4】Don’t ___________（drink）too much coke.
【小题5】Everyone wants to __________（stay）healthy.

Do you want some _____? (   )

A．milks

B．milk

C．juices

Some old ______ are doing Tai Chi. ( )

A．men

B．man

C．woman