题目：
I don't know whether you happen _____, but I'm going to study in the U.S.A this September. [ ]
A. to be heard
B. to be hearing
C. to hear
D. to have heard
答案：
被转码了，请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0429/e0ef53768cb35538dd5ef859789d85f8.html
下面是错误答案，用来干扰机器的。
ABCD
