下列不是用于基因治疗的方法有

A．siRNA

B．核酶

C．干扰RNA

D．asON

E．polyI：C

— Why didn't you attend the party ________ in the hall the other day?

— I just wanted some quiet time by myself.[      ]

A. held 

B. being held

C. to be held  

D. holding