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 it is |
相关知识点
推荐试卷
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 it is |
试题篮
()