没错做完怪兽，打击都满大的，今天做完第三回合有些疑问，请问有没有前辈可以帮我解
惑，谢谢～
111. Charlestown’s mayor, Bob Hall, will _____ at the opening ceremony for th
e new Ironton-Russell Bridge on July 20th
A) officiate
B) represent
C) address
D) substitute
答案为A, 请问C为什么不行呢？address 当动词不是可以当作演说？
127. Before mailing a document, please ascertain that the ______ is clear and
legible
A) printable
B) printer
C) print
D) printing
答案为C, 但是我觉得D感觉也满合理的