New Year’s Day will come. Now it is necessaryus to have a party celebrate it.A. of ; for

问题补充：

New Year’s Day will come. Now it is necessaryus to have a party celebrate it.

A. of ; for

B. for; to

C. of; to

D. for; for

答案：

A. of ; for

(答案→)B. for; to

C. of; to

D. for; for

解析：在强调句型“it is adj for sb to do sth做某事对某人怎么样”中，表示人的对象前面用介词for，of多用来说明所接对象的性质特点等。本句中下文为不定式做补足语，表示具体的将要进行的动作，故选B。