He paid the boy $ 10 for washing ten windows, most of ______ hadn’t been cleaned for at least a year()
A. these
B. those
C. that
D. which
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There__ anything new in today’s paper()
A. is
B. are
C. isn’t
D. aren’t
There are so many green trees on__ sides of the street()
A. either
B. each
C. both
D. neither
There__ some paper and a pen on the desk()
A. is
B. are
C. have
D. has
Once environmental damage_, it takes many years for the system to recover()
A. will be done
B. would be done
C. is done
D. does