. It is uncertain __ side effect the medicine will bring about, although about two thousand patients have taken it.
#34730
A
that
B
what
C
how
D
whether
推荐题目
She spent ________ much time playing Majiang that she didn’t get enough sleep .
#33458
A
very
B
so
C
too
D
such
_________you have a rich knowledge of Chinese history, try acting as a guide for these foreign visitors.
#31038
A
Unless
B
Though
C
Now that
D
Ever since
(2013·高考北京卷)I took my driving license with me on holiday，________I wanted to hire a car.
#30668
A
in case
B
even if
C
ever since
D
if only
The police stopped the car______ speed was more than 120km per hour.
#33272
A
whose
B
which
C
of which
D
that
Mr. Hopkins has not yet answered my question ______ I can go with him to______he calls the Underground Treasure House next week.
#34110
A
that; which
B
that; where
C
whether; that
D
whether; what