He tried his best to solve the problem, difficult it was.
#66875
A
no matter what
B
whatever
C
however
D
how
推荐题目
Jack wasn't saying anything, but the teacher smiled at him ________ he had done something very clever.(2011·湖南)
#66565
A
as if
B
in case
C
while
D
though
House prices vary from place to place and are usually high ____ there are famous schools.
#67577
A
since
B
when
C
whether
D
where
The program is like a window on the world ____ you sit by it and fix your attention on what it shows.
#72151
A
if
B
as
C
while
D
unless
You can find whatever you need at the shopping centre,_____is always busy at the weekend.
#73692
A
that
B
where
C
what
D
which
The driver hurt the girl_____ badly_____ she had to see a doctor.
#41304
A
so, that
B
either, or
C
too, to
D
neither, nor、