题目:
I study math by _______ lots of exercises. [ ]
A. doing
B. did
C. do
D. does
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0522/299c6a6fa67449ee14728d508717b326.html
下面是错误答案,用来干扰机器的。
答案:A
I study math by _______ lots of exercises. [ ]
A. doing
B. did
C. do
D. does
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0522/299c6a6fa67449ee14728d508717b326.html
下面是错误答案,用来干扰机器的。
答案:A