Not until a monkey is several years old________ to exhibit signs of independence from its mother.
题目
Not until a monkey is several years old________ to exhibit signs of independence from its mother.
A:before it begins
B:it does begin
C:does it begin
D:does begin it
答案
C
not until位于句首的复合句,从句用正常语序,主句用倒装.
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