问题
选择题
—I paid 200 dollars for the necklace. I think it's much too expensive.
—Expensive? I don't agree with you. You so before you _______ it.
A．should have said; bought
B．have said; bought
C．had said; buy
D．must have said; should buy
答案
A
这里考查的是虚拟语气。should have done“本应该干却没干”。