高考英语单项选择题解题技巧(12)

高考英语单项选择题解题技巧Generally speaking,_______ according to the directions, the drug has no side effect. A. when taking B. when taken C. when to take D. when to be taken解析：该句省略了the drug was, 补全后则为：the drug was taken according to the directions.答案选 B 。