Whenever I go to Beijing, ____ is quite frequent, I will go to visit the Great Wall

下列各句中，加横线的成语使用恰当的一项是（3分）（ ）

The result of the study indicated that it was the type offat ______ made the difference

Since there is always a power failure in the town, they have candles_______ in the closet

It’s no use____ that you didn’t knowthe rules