问题
选择题
Distinguished guests and friends . _____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
答案：C
考查倒装结构。句中正常语序为our alumni (校友) from home and abroad are attending he ceremony of the 50th Anniversary this morning。句意：今天上午，我们来自国内外校友将参加50周年庆典。