____ caused the accident is still a complete mystery.
#4984
A
What
B
That
C
How
D
Where
推荐题目
The main cause of HIV / AIDS infection in China is drug abuse, ______ is very serious in Yunnan.
#4983
A
what
B
who
C
that
D
which
—I don’t know how to deal with it. --Well. I recommend that you ______ some professional advice.
#4525
A
would get
B
will get
C
get
D
can get
_______, I suppose, and the housing problems for about 280,000 low-income families in this area could be settled.
#4805
A
If you double your efforts
B
So long as you keep your spirits
C
A bit more efforts
D
Making greater efforts
Obama, _______ life was once hard when he was young, were elected President of American.
#4960
A
for whom
B
who
C
to whom
D
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