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He has made another wonderful discovery, of great importance to science. A．which I think is B．which I think it is C．of which I think it is D．I think which is 【查看更多】

 

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He has made another wonderful discovery, ________ of great importance to science.

[　　]

A．which I think is

B．which I think it is

C．of which I think it is

D．I think which is

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He has made another wonderful discovery, ________ of great importance to science.

[　　]

A．which I think is

B．which I think it is

C．of which I think it is

D．I think which is

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He has made another wonderful discovery, ________ be of great importance to science．

[　　]
A．

which I think

B．

that I think

C．

which I think will

D．

when I think is

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