After you have used the dictionary，please just put it back it belongs．
#70102
A
to whom
B
to which
C
what
D
where
推荐题目
He loves his parents deeply, ________ are very kind to him.
#69736
A
both of them
B
both of who
C
whom
D
both of whom
The policy of the mainland is very clear and straightforward，and the key problem is ______ the leaders of Taiwan will accept it.
#72233
A
that
B
how
C
why
D
whether
Some researchers believe that there is no doubt ____ a cure for AIDS will be found.
#68469
A
which
B
what
C
that
D
whether