the instructions on the packet when you take the drug and the drug, I think, will work soon.
A. Follow
B. To follow
C. Following
D. Followed
网友回答
(答案→)A. Follow
B. To follow
C. Following
D. Followed
解析：祈使句+and 后用一般将来时态。中间有一个时间状语从句。句意：当你吃药的时候遵循包装上的说明书，我认为，药物很快会生效的。