the whole process for the studies of cancer took more than a year, the technology is moving so fast that it will soon take just weeks．
#31066
A
How
B
Because
C
If
D
While
推荐题目
—What do you think of it?—Well，it’s worth doing ________ the result is satisfactory.
#30224
A
the moment
B
as soon as
C
once
D
so long as
I’m fine — I just felt a bit sleepy and tired, that was ________ I went to bed so early."
#33071
A
because
B
when
C
that
D
why
The reason ____ he was late for school was _____he had to send his mother to a hospital.
#30183
A
that; why
B
why; because
C
why; that
D
that; because
You have to wear a helmet and a life jacket for protection, just ____ you fall into the water.
#32160
A
for
B
because
C
so that
D
in case