78、 __________
A． A) of 
B． B) with
C． C) on 
D． D) from
79、 __________
A． A) better 
B． B) farther
C． C) further 
D． D) longer
80、 __________
A． A) cut 
B． B) improve
C． C) enhance 
D． D) cripple
81、 __________
A． A) fewer 
B． B) more
C． C) larger 
D． D) less
82、 __________
A． A) which 
B． B) as
C． C) when 
D． D) for
83、 __________
A． A) because of 
B． B) according to
C． C) thanks to 
D． D) regardless of
84、 __________
A． A) by 
B． B) in
C． C) for 
D． D) as
85、 __________
A． A) If 
B． B) Even
C． C) Despite 
D． D) Since
86、 __________
A． A) pure 
B． B) unique
C． C) net 
D． D) neat
87、 __________
A． A) drop 
B． B) cause
C． C) increase 
D． D) progress