Scientists say it may be one year or so ________ it is possible to test the new medicine on human patients.
#32551
A
when
B
after
C
before
D
since
推荐题目
People in Shaanxi are proud of they have achieved in the past ten years.
#31071
A
what
B
which
C
that
D
how
—What should we pay more attention to if we go north in winter, Mum?—Nothing much. Take warm clothes ______ the weather is cold.
#80658
A
as long as
B
now that
C
if
D
in case
Mark needs to learn Chinese________his company is opening a branch in Beijing.
#30240
A
unless
B
until
C
although
D
since
— My teacher punished me this morning.—Why? ______ I know, you’ve done nothing wrong,
#31973
A
as long as
B
as far as
C
as well as
D
as soon as