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
Our school held a respect-parent activity last month, ______ our students benefited a lot.
#32680
A
when
B
where
C
which
D
that
A man does not know the difficulty of anything _______ he does it personally.
#31477
A
although
B
if
C
because
D
unless
The old lady was so pleased with all ______ we had done for her ______ she wrote us a thank-you letter.
#34513
A
what; that
B
that; that
C
which; that
D
that; what