问题
选择题
Quite a few tall buildings _______ the last two years.
A．have been put up
B．were put up
C．had put up
D．put up
答案
答案：A
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Quite a few tall buildings _______ the last two years.
A．have been put up
B．were put up
C．had put up
D．put up
答案：A
