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
推荐题目
The dam will generate electricity _____ about 40 million tons of coal without causing so much air pollution.
#4674
A
equal
B
be equal
C
equal to
D
be equal to
I thought our friendship was finished Jenny apologized first and I forgave her right then．
#4558
A
when
B
until
C
while
D
unless
His wife ___ to catch the first train but she was too late.
#4802
A
is hoping
B
had hoped
C
has hoped
D
would hope
.Walking alone in the deserted village, John was scared. He thought he ______Tom to go with him.
#4735
A
might have asked
B
should ask
C
must have asked
D
should have asked