Tina’s sister began to ride a bike to school ___________.A. when 6 years old B.at the age of 6 C. at the age of 6 years D. at 6 years old
问题描述：
Tina’s sister began to ride a bike to school ___________.
A. when 6 years old
B.at the age of 6
C. at the age of 6 years
D. at 6
years old
答
answer :B;;; no doubt
答
B.后面可以跟When she was 6 years old 或者at the age of 6
答
B,前面是现在完成时才可以用A，
答
我认为应该选B。。。。。。
答
这道题应该选B at the age of...表具体年龄即具体时间
——丶寒冰烈