I can't figure out ________ it is that makes him so difficult at school.
#67203
A
how
B
what
C
why
D
which
推荐题目
I live in a town ______ runs a small and winding river.
#69030
A
through which
B
which
C
in which
D
where
Living in the mountain area has its problems , _____ obtaining water is a big problem.
#67011
A
of which
B
for what
C
as
D
whose
We can never forget the days _______ the two astronauts in spaceship worked together and the days ________ we spent together.
#72196
A
when; which
B
which; when
C
what; that
D
on which; when
Nothing beats a solid handshake _________ greeting someone.
#68034
A
when you
B
when it comes to
C
if it is
D
while