Not until a monkey is several years old _________to exhibits signs of independence from his mother.
A、 it does begin
B、 when it begins
C、 before it begins
D、 does it begin
【正确答案】：D
Not until a monkey is several years old _________to exhibits sig
📱 扫码体验刷题小程序
扫一扫使用我们的微信小程序