— ____ in this street?   — I think Mr. Black is the richest man.
#73148
A
Whom do you think is the richest man
B
Who do you think is the richest man
C
Do you think who is the richest man
D
Do you think whom is the richest man
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We won’t give up ______ we should fail 10 times.
#67611
A
as if
B
except for
C
in case
D
even if
The river______ are covered with trees is polluted.
#74034
A
of which the banks
B
whose banks
C
the banks of which
D
A,B,C are right