The survey shows that ______ we are enjoying less and less good sleep, rates of heart diseases have risen rapidly．
#30126
A
while
B
although
C
if only
D
as though
推荐题目
Don’t start reading a book ________ you find that it’s one you can read with ease and understanding.
#32363
A
when
B
if
C
unless
D
though
—I wonder how much you charge for your services.—The first two are free ________ the third costs $30.
#30476
A
while
B
until
C
when
D
before
I think you should complain ---________ of course, you are happy with the way things are.
#31601
A
if
B
unless
C
as
D
because
_______surprised me most was the suggestion that he _____. 31-35 BBDAC
#31754
A
What ; should make
B
What ;had made
C
That ;should make
D
That ; had made