Linda can't attend the party _____ at Tom's house at  present because she is preparing a

speech for the party  _____   at Marie's house tomorrow.   [ ]

A. being held; to be held      

B. to be held; held  

C. held; being held              

D. to be held; to be held

参与型培训法包括（）。

A.案例研究法

B.特别任务法

C.头脑风暴法

D.个别指导法

E.模拟训练法