【题目】 house property tax come into effect, China might witness a fall in house prices.
A. Would B. Should
C. Could D. Might
在线课程【答案】B
【解析】
考查情态动词和虚拟语气。句意：如果房产税生效，中国可能会出现房价下跌。根据语境可知，这里表示与将来事实相反的假设，与将来事实相反的虚拟条件句中常常用“should +do”，并且可以将if省略，should提前到句首；本题从句完整的表达是“If house property tax should come into effect”，故答案是B。