问题
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
B: when taken
C: when to take
D: when to be taken
正确答案是：
同类题型
In order to catch the movie, Mary finished her supper in ________ ten minutes[ ]
His father _____ to Nanjing. He _____ back next week.
The farmers were more anxious for rainthan the people in the city because they had more ______
They two free tickets to Canada, otherwise they’d never have been able to afford to go