He gave us another piece of advice, ________ of great help to the research work.
#77225
A
which I think is
B
which I think it is
C
I think which is
D
I think it is
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She says she still remembers the things and the persons ______ I told him last year.
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A
which
B
that
C
who
D
whom
Rock- climbing is a breathtaking sport， courage plays an important role.
#75364
A
which
B
whose
C
where
D
when
It' s a pity that there are many teenagers _____only on-line activity is chatting with their e -pals !
#75860
A
who
B
that
C
which
D
whose
We’re in a stage _____ it’s still too early to say who will win the most votes and become the new President.
#77680
A
that
B
where
C
which
D
what