___,follow the direction on the bottle carefully.A.When taken drugs B.When drugs a takenC.When one takes drugs D.When taking drugs
问题描述：
___,follow the direction on the bottle carefully.
A.When taken drugs B.When drugs a taken
C.When one takes drugs D.When taking drugs
答
C
时间壮语从句
答
A
答
C.When one takes drugs
意思是：当一个人要吃某种药时，一定要仔细阅读瓶子上的说明
when后面不能加进行时，排除D
A\B都没有主语
答
D
答
d
当你吃药时,请仔细按瓶上的指示.
后面是一个祁使句,主体是人.