高等继续教育 / 大学英语语法
正确率：100%
题型描述: 单选题
Quite a number of old houses in that street ＿＿＿＿＿＿ pulled down since 1999.
A.has
B.have
C.has been
D.have been
Quite a number of old houses in that street ＿＿＿＿＿＿ pulled down since 1999.
A.has
B.have
C.has been
D.have been
参考答案：
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