I___ he ___ right. A.think,isn't B.don't think,is C.think,do

I___ he ___ right. A.think,isn't B.don't think,is C.think,don't D.don't think,be
My mother hoped__(become) a scientist when she was young.
Please try your best to finish the work with__ money and__ people.
A.few,little B.a few;a little C.less;fewer D.fewer;less