Hard _____ he tried, he failed to catch up with the first runner.
#32786
A
although
B
as
C
while
D
when
推荐题目
I'm sorry you've been waiting so long，but it'll still be some time ________ Brian gets back.
#30681
A
before
B
since
C
till
D
after
(2013·青岛一模)You seem to have a readymade answer ________ I ask you a question.
#30429
A
whenever
B
whatever
C
whichever
D
whoever
Would you like a cup of coffee ______ shall we get down to business right away ?
#79774
A
and
B
then
C
or
D
otherwise
There were dirty marks on her trousers _______ she had wiped her hands.
#31676
A
when
B
which
C
where
D
That
Schools in the east tend to be better equipped, ____ those in the west are relatively poor.
#32277
A
As
B
While
C
When
D
But