This old computer must have been of great use to _______ did the scientific research. A．those B．when...
2023-01-09 04:58:16 72次 广西钦州二中2010届高三下学期每周一测（六）英语 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
This old computer must have been of great
use to _______ did the scientific research.
|
A．those
|
B．when
|
C．whoever
|
D．whomever
|
本题链接：
