.— $100 but that is my last offer.—A. Good idea!B. what did you say ?C. Oh it’s up to yo

问题补充：

.— $100, but that is my last offer.

—

A. Good idea!

B. what did you say ?

C. Oh, it’s up to you

D. OK, it’s a deal .

答案：

A. Good idea!

B. what did you say ?

C. Oh, it’s up to you

(答案→)D. OK, it’s a deal .

解析：考查交际用语。A好主意；B你说什么？C由你决定；D好的，成交。句意：—100元，这是我最后的出价了。—好的成交。根据句意说明D正确。