I need to buy two ______ of color ______.

1.   ?    boxs --- chalks
2.   ?    boxes --- chalks
3.   ?    boxes --- chalk
4.   ?    boxs --- chalk

He is only thirty, but has got __________.

1.   ?    a few gray hairs
2.   ?    a few gray hair
3.   ?    a little gray hair
4.   ?    a little gray hairs

We should make a careful study of the old teacher's __________.

1.   ?    teaching experience
2.   ?    teaching experiences

__________ to play with the kids!

1.   ?    What a fun it is
2.   ?    What a fun is it
3.   ?    What fun it is
4.   ?    How fun it is

___________weather we have today!

1.   ?    What a nice
2.   ?    What nice

The rainbow is one of the most beautiful __________ of the nature.

1.   ?    phenomenon
2.   ?    phenomena
3.   ?    phenomenons
4.   ?    phenomenas

The two men are __________.

1.   ?    of the same ages
2.   ?    of same age
3.   ?    same age
4.   ?    of the same age

The umbrella was really _______in my trip.

1.   ?    of much use
2.   ?    much

______ will conquer nature.

1.   ?    Man
2.   ?    Men
3.   ?    The man
4.   ?    The men

The little boy is smart. He has __________.

1.   ?    brain
2.   ?    a brain
3.   ?    brains
4.   ?    the brain