I have no idea ______ it is that makes him puzzled.
#33142
A
how
B
what
C
why
D
which
推荐题目
_____you have to do the job, you should try your best to do it well even though it may be very difficult for you.
#31249
A
Since
B
While
C
Unless
D
Though
Although he knew little about the large amount of work done in the field , he succeeded ____other more well-informed experimenters failed.
#80107
A
as
B
unless
C
what
D
where
I showed an old friend of mine around the city, surprise, the changes had been so great.
#34149
A
whose
B
which
C
to whose
D
to which