Generally Speaking,___according to the directions thedrug has no side effect.

问题描述:

Generally Speaking,___according to the directions thedrug has no side effect.
A、when taking B、when taken C、when to take D、when to be taken
为什么这题选B,不选D

答案:B解析:这道题主要考察非谓语动词表示的语态以及时态的含义:taking表示主动和进行taken表示被动和过去to be taken表示被动和将来在这道题里when taken according to the directions,用taken表示被动,主句时态...