Before testing this method on patients, Dr. Baker had tests for two years on three hundred dogs. A．f...
2023-01-12 04:25:02 21次 全国通用2010届高考英语三轮复习：动词及动词短语强化之二 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
Before testing this method on patients, Dr.
Baker had tests for two years
on three hundred dogs.
|
A．found out
|
B．helped out
|
C．worked out
|
D．carried out
|
本题链接：
