问题

The sales of houses in our city fell by 40 percent last month, 48 percent __________ we don’t count low-price houses provided for poor residents

A:as
B:unless
C:if
D:before

正确答案是：

同类题型

That company is said ___________ a new kind of robot in their production last year.

Until today some black people_________ a stage _________ they have almost no rights at all.

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