no better than 和as better as 应该填哪个?

no better than 和as better as 应该填哪个?
Lucy didi _______Lily in the exam.
A.no better than
B.not better than
C.as better as
应该选什么,
--Is the flower beautiful?
--Yes ,at ___it's ___the one you bought for me.
A.last,as bad as
B.least,not better than
C.least,no worse than