We are bound to solve the present severe problem, ________ we act intelligently and promptly.
#72922
A
even though
B
unless
C
as long as
D
in case
推荐题目
You’d better make a mark ______ you have any questions.
#71971
A
at which
B
at where
C
the place
D
where
单项选择（每题1分）_____ seems to be a possibility that we shall be able to afford the car we need.
#70335
A
It
B
That
C
There
D
This
This is Mr. Smith. _______ help I worked out many difficult problems.
#69258
A
whose
B
with whom
C
who
D
with whose
The river______ are covered with trees is polluted.
#74034
A
of which the banks
B
whose banks
C
the banks of which
D
A,B,C are right