—Which team are you going to play the day after tomorrow?—A team from No.7 Middle School.

问题补充：

—Which team are you going to play the day after tomorrow?

—A team from No.7 Middle School. I hope we will win.

A.about B.with C.against

答案：

解析：句意：后天你将和哪个队比赛。第七中学的一个队，我希望我们能赢。play against

与…进行对抗比赛，故选C