The guests are looking forward every moment to to China again.A. honor; visitB. honored;

问题补充：

The guests are looking forward every moment to to China again.

A. honor; visit

B. honored; pay a visit 

C. honored; paying a visit

D. honoring; visiting

答案：

A. honor; visit

B. honored; pay a visit 

(答案→)C. honored; paying a visit

D. honoring; visiting

解析：honored过去分词作定语,意思是“尊敬的”；look forward to中的to是介词,其后加动名词或名词。visit作动词时,其后直接跟宾语,作名词时,后面加to后再接宾语。