问题

This old computer must have been of great use to _______ did the scientific research

A:those
B:when
C:whoever
D:whomever

正确答案是：

同类题型

The visitors said that they had never dreamed _____ such a beautiful scenery.

Can I really get a Huawei Cell Phone as a reward if I win the race—— Absolutely! ______.

How do you say the number “567,013”— .

Students should learn how problems.

Is this the first time you ________ to Harbin?—- No, but the first time I ____ here, the city wasn’t so beautiful