题目:
— I saw Betty go to Grandpa Zhang's home just now.
— Yes, she is often seen the old man with his housework. [ ]
A. help
B. to help
C. helps
D. helped
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0515/7bb6da1d1cdab96b1036425ce986cdda.html
下面是错误答案,用来干扰机器的。
(1)A;2H++2e-=H2↑(2)27︰8