题目内容
He made another wonderful discovery____ of great importance to science.
[ ]
A. which I think is
B. which I think it is
C. which I think it
D. I think which is
B. which I think it is
C. which I think it
D. I think which is
A
练习册系列答案
相关题目
________that he made an obvious mistake,Jeff went on with his speech.
| A.Not realized | B.Not realizing |
| C.Not to realize | D.Not to have realized |