222.Distinguished guests and friends,welcome to our school.______ theceremony of the 50th Anniversary this morning are our alumni (校友) from home and abroad.（江苏）A.Attend B.To attend C.Attending D.Having attended请翻译,
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222.Distinguished guests and friends,welcome to our school.______ theceremony of the 50th Anniversary this morning are our alumni (校友) from home and abroad.（江苏）A.Attend B.To attend C.Attending D.Having attended请翻译,
222.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.（江苏）
A.Attend B.To attend C.Attending D.Having attended
请翻译,
222.Distinguished guests and friends,welcome to our school.______ theceremony of the 50th Anniversary this morning are our alumni (校友) from home and abroad.（江苏）A.Attend B.To attend C.Attending D.Having attended请翻译,
尊敬的嘉宾和朋友们,早上参加50周年（校庆）开幕式的是来自国内外的校友
选C 此句为倒装句,不倒装的语序是 our alumni are attending the ceremony of the 50th Anniversary this morning.有就是说attending其实是跟在are 后的
C
因为这个是现在时，从后面的are可以看出，所以to attend 和having attended就去除了
而因为后面有are这个动词所以这里一定是填非谓语
选C
希望亲满意～