It was not until 1911, _______ the first vitamin was identified, _______ people realized the importance of it．
#85155
A
when; which
B
when; that
C
that; which
D
that; that
推荐题目
It was only when I read this story for a second time ________to appreciate its beauty.
#84925
A
that did I begin
B
had I begun
C
then I began
D
that I began
---Have you seen the film Under the Hawthorn Tree? ---Of course, I have. It was in our village ____ it was made.
#85080
A
that
B
where
C
when
D
which
I wonder _______ there are so many natural disasters across the world in 2010.
#84725
A
why is it
B
it is why that
C
why is it that
D
why it is that
Could it be in the restaurant in ___ you had dinner with me yesterday ___ you lost your handbag.
#84993
A
that; which
B
which; that
C
where; that
D
that; where