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In front of the house ________ two tall trees.
A. is
B. stand
C. is standing
D. stands
In front of the house ________ a big tree．
A．are
B．have
C．has
D．stands
In front of the two houses ________ a small garden．
A．be
B．were
C．was
D．are
In front of the library ________ some tall trees.
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