It's suggested that some activities to celebrate the 30th anniversary of the Reform and O

问题补充：

Its suggested that some activities to celebrate the 30th anniversary of the Reform and Opening up.

A. should hold

B. are held

C. be held

D. will be held

答案：

A. should hold

B. are held

(答案→)C. be held

D. will be held

解析：考查主语从句的虚拟语气。题干中的suggest意为“建议”，所以that引导的主语从句要用虚拟语气，表达形式为“should＋动词原形”，should可以省略，故选C。句意：有人建议应当举办一些活动来庆祝改革开放第30周年。