应当先履行债务的当事人，有确切证据证明对方有（）情形的可以中止履行。

A.经营状况严重恶化

B.曾经失约过

C.曾被其他债权人起诉

D.利润下降

—This sweater is too expensive. I can't afford it.

—How about this one? It's much ______. [ ]

A. cheap

B. cheaper

C. cheapest

D. the cheapest