79.This is not a match.We are playing chess just for ____.

A.habit B.custom C.fun D.game

80.All the ____ indicates that he has been deeply involved in the crime.

A.evidence B.fact C.factors D.cause

79.答案是C，

for fun,为了娱乐，也可以说成，for pleasure。

80.答案是A,

此题考查名词辨析，evidence,迹象，证据。