This book her 10 yuan but I only 5 yuan on the same one.A. spends; spendB. spends; cost

问题补充：

This book her 10 yuan, but I only 5 yuan on the same one.

A. spends; spend

B. spends; cost

C. costs; cost

D. costs; spend

答案：

A. spends; spend

B. spends; cost

C. costs; cost

(答案→)D. costs; spend

解析：costs花费，主语一般是物；spend表示花费金钱，时间等，主语一般是人。句意：这本书花了它十元，但是同样一本书，我只花了五元。结合语境可知前文主语为物，下文主语为人，故选D。