用little ,a little ,few ,a few.填空
There are （ ）people in the street because it's raining hard outside.
Mother told me to buy ( ) meat in the supermarket.There's ( ) left in the fridge.
Please give him ( ) help.
There have been ( ) people flying to the moon .
The text is very easy for you.There are ( ) new words in it.
请说明理由