They want to develop a kind of dog-friendly food _________ will help dog owners cool down their pets.
#43240
A
who
B
what
C
which
D
whether
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—Do you believe everything _______ is in his book?—No, not really. I only believe something ______ he says.
#42566
A
which; which
B
that; that
C
/; /
D
that; who
---Who do you think is the man __________ first flew into space in China? --- Yang Liwei is.
#42883
A
/
B
who
C
that
D
whom