Now China is fighting against illegal cooking oil（地沟油）, a kind of waste oil _____can cause a lot of illness.
#42592
A
which
B
whose
C
who
D
what
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–Do you know the boy ___ is standing under the tree?-- Yes, he is my friend, Peter.
#43171
A
what
B
who
C
whom
D
whose
Could you tell me _________ find another interesting detective story to read?
#42910
A
where I can
B
where can I
C
where I could
D
where could I
He must be the captain ______ group got the first prize in the ping-pong game.
#42698
A
who
B
which
C
that
D
whose