Some researchers believe that there is no doubt ______ a cure for AIDS will be found.
#72535
A
which
B
that
C
what
D
whether
推荐题目
Although the play had already been on for 10 minutes, I was still unable to find a seat ___________.
#69603
A
to sit
B
for sit on
C
to sit on
D
for sitting
My parents have promised to come to see me before I ______ for Africa.
#68242
A
have left
B
leave
C
left
D
will leave
______the road ,don’t forget to look both ways.
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A
As crossing
B
While you cross
C
While crossing
D
Cross
_______ we do morning exercises every day obviously _______ us good.
#66588
A
That; do
B
When; do
C
What; does
D
That; does