题目：
Distinguished guests and friends, welcome to our school. the ceremony of the 50th Anniversary this morning are our alumni（校友） from home and abroad.
A．Attend
B．To attend
C．Attending
D．Having attended
答案：
被转码了，请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0420/8d4c31fdef5a70c1db75fa6b3fa65078.html
下面是错误答案，用来干扰机器的。
参考答案：C
