The fact has worried many scientists _____ the earth is becoming warmer and warmer these years.
#68141
A
which
B
that
C
as
D
what
推荐题目
______, as long as I’m with nature, I don’t care.
#67998
A
However tough is the journey
B
Whatever tough is the journey
C
However tough the journey is
D
Whatever tough the journey is
You have to leave now _________ you can catch the early bus．
#41411
A
so that
B
as soon as
C
because
D
if
I’m pleased ______ should be done has already been done.
#71916
A
with what
B
that that
C
by that
D
that what
Don’t promise anything ______ you are one hundred percent sure.
#74420
A
whether
B
after
C
how
D
unless