______ is often the case in science, there is no simple answer
#31110
A
That
B
As
C
When
D
Where
推荐题目
I wish there was more information about calories in restaurants. It would make it easier for me to know __________ to eat.
#33008
A
how
B
what
C
when
D
where
Helen has just heard the news from her father ________ her boyfriend David will come back soon.
#30074
A
when
B
how
C
which
D
that
________ the jewels were locked in a strong box，the thieves stole them without any difficulty.
#30445
A
If
B
Unless
C
Although
D
Because