It is uncertain____side effect the medicine will bring about，although about two thousand patients have taken it.
#67381
A
that
B
what
C
how
D
whether
推荐题目
Having checked the doors were closed, and _____all the lights were off, the boy opened the door to his bedroom.
#74300
A
why
B
that
C
when
D
where
Since ______ to the world, the dance “GangnamStyle” has caused a release of a certain feeling.
#68121
A
introduced
B
introducing
C
being introduced
D
to be introduced
It was believed that things would get worse, but ____ it is they are getting better.
#72254
A
before
B
after
C
because
D
as
As long as the laws of nature ______, there will be tornadoes.
#68427
A
exist
B
are existing
C
will exist
D
existed
Lisa, could you tell me ________ yesterday?
#70303
A
what did the teacher say
B
what the teacher said
C
what will the teacher say
D
what the teacher will say