单项选择题


A．Unless
B．If
C．Since
D．Because
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单项选择题
A lot of tall buildings have been ______ in the city in the last few years.
A．put up
B．put on
C．put out
D．put off
单项选择题
He made ______ progress that he was praised for it.
A．so fast
B．such a great
C．such many
D．so much
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