Some researchers believe that there is no doubt _______ a cure for AIDS will be found.
#67941
A
which
B
that
C
what
D
whether
推荐题目
I must think of a proper gift for my mother， won’t be expensive but will make her happy.
#72613
A
who that
B
the one which
C
it
D
one that
________ day you come, we will be pleased to see you．
#70167
A
Whenever
B
Wherever
C
Whoever
D
Whichever
--What would you do if you ____ a million dollars?--I’d give it to the charity
#41193
A
win
B
won
C
will win
D
is to win
单项选择（每题1分）In his letter was his promise _____ he would spend the Christmas Eve with me.
#70344
A
that
B
what
C
which
D
whether
While paying for the gas,Mary’s mother told the seller about the nice night she had spent at the Welcome Inn.
#71638
A
in which
B
when
C
on which
D
that