Not until a monkey is several years old______to exhibit signs of independence fr

游客2023-11-15  23

问题 Not until a monkey is several years old______to exhibit signs of independence from its mother.

选项 A、it does begin
B、when it begins
C、does it begin
D、before it begins

答案 C

解析 否定词not用于句首,要用倒装句,即把句子谓语的情态动词或助动词提到主语前面。
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