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
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All 5 children of the Blacks, _______ are now working abroad, will come back for their parents’ 50th wedding anniversary.
#68495
A
two of whom
B
two of them
C
both of whom
D
both of them
One of the most interesting places in Beijing____the foreigners want to visit is the Great Wall.
#74699
A
which
B
that
C
what
D
where
—Do you have anything to say for yourselves?—Yes, there is one point ________ we must insist on.
#67158
A
why
B
where
C
how
D
that