Electronic devices such as iPods and headphones can do great harm to our hearing if _______ improperly.
#67875
A
being used
B
used
C
to be used
D
having been used
推荐题目
_______ is known to everybody that the moon travels round the earth once every month.
#73367
A
It
B
As
C
That
D
What
Nowadays workers are earning per month as they did in the 1990s.
#68301
A
twice as much as
B
as twice as much
C
as much twice as
D
twice as much
It was believed that things would get worse, but ____ it is they are getting better.
#72254
A
before
B
after
C
because
D
as
The old house, in front of ________ there is an apple tree, is ________ I used to live.
#73349
A
that, the place
B
it, the place
C
which, where
D
what, where
I cannot hear the professor clearly as there is too much noise _____ I am sitting.
#67482
A
that
B
where
C
who
D
what