You won’t be by the host to the wedding you are a good friend of his.A. advised; unlessB.

问题补充：

You won’t be by the host to the wedding you are a good friend of his.

A. advised; unless

B. admitted; if

C. invited; unless

D. impressed; if

答案：

A. advised; unless

B. admitted; if

(答案→)C. invited; unless

D. impressed; if

解析：考查动词辨析和unless用法。Advise建议；admit承认；invite邀请；impress留下印象；Unless如果…不…句意：如果你不是他的好朋友，你是不会被邀请作为他婚礼的主持人的。故C正确。