He has made a discovery, _____ of great importance to the progress of science and technology.
A: I think which
B: that I think is
C: which I think is
D: which I think it is
A: I think which
B: that I think is
C: which I think is
D: which I think it is
举一反三
- He has made another wonderful discovery, () of great importance to science and man. A: which I think is B: which I think it is C: of which I think it is D: I think which is
- I think that ________he said is right. A: all what B: all that C: which D: all which
- I think （） he said is right. A: who B: what C: that D: which
- Which of the following sentences is correct A: I don't think it is a free choice. B: I think it is not a free choice. C: I didn't think it is a free choice. D: I thought it wasn't a free choic
- Which one is the appropriate expression to replace “I think”?