—Excuseme,Maria.CanIuseyourbike?—Sure.Hereyouare.Butyou...

问题详情：

—Excuse me, Maria. Can I use your bike?

—Sure. Here you are. But you must return it _____ time.

A. in                    B.  to                  C. on

【回答】

C

知识点：介词和介词短语

题型：选择题