1---Will there be any student who can't go to the park tomor

1---Will there be any student who can't go to the park tomorrow?
---( )All of us will go.
A.No,there won't B.Yes there will be C Yes they will D No they won't
2 If ( )(fewer或less) people drive cars ,there will be ( ) ( fewer或less) pollution in the city
3-----How old is your grandmother,Linda
-------78,I hope she'll live ( )(be的适当形式）100 years old