He tried his best to solve the problem, ______ difficult it was.
#33187
A
however
B
no matter
C
whatever
D
although
推荐题目
Betty’s English is _______ than _______ in the class.
#80237
A
much better; anyone else
B
far better; anyone else’s
C
a lot better; anyone’s else
D
a great deal better; anyone’s else’s