题干

—How long have you been studying at this school?

—I have been studying here ________.

A:since I was thirteen years old

B:when I was thirteen

C:at the age of thirteen

D:after I was thirteen

上一题 下一题 0.0难度 选择题 更新时间:2019-03-17 09:57:24

答案(点此获取答案解析)

A