Here is my classmate _____ bicycle was lost yesterday.   
#78601
A
his
B
that
C
whose
D
which
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There is a new problem involved in the popularity of private cars __________ road conditions require __________.
#78215
A
that ... improving
B
which...to be improved
C
where ...improving
D
when...improving
Tomorrow would be Christmas Day, and she had only $1.87               .
#77818
A
with which to buy a present to Jim
B
by which to buy Jim a present
C
with which she could buy a present for Jim
D
in which to buy Jim a present