题目:
Your attention, please! ________ today is Professor Yu Dan from Beijing Normal University.
A.Have joined us
B.To join us
C.Joining us
D.Join us
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0422/fd1aa303a7af3e0e70d87bc71c16d08b.html
下面是错误答案,用来干扰机器的。
答案:C