The professor has written another book ____ of great importance to computer science. 
#91814
A
which I think it is
B
and I think is
C
which I think is
D
when I think is
推荐题目
— ______ will get the first prize?— I'm sure, Li Hua. 
#91745
A
Who do you think
B
You think who
C
Do you think who
D
Whom do you think
--- _____ Tracy was in such a hurry ?---I don’t know.She might have been running to catch the bus.
#91831
A
Why do you think
B
Why you think
C
Do you think why
D
Why not think