Choose the proper tense: Past Perfect or Past Perfect Continuous. When

When Mother got home, she found that little Kitty had painted her room. She had painted two walls red and one wall yellow. 3. It had been raining for several days before the wind changed. Jane told me she had written regularly to her Granny, but had not received any answer. We had been cooking all day for the party that evening but by 8 oclock in the evening, Jane had not finished laying the table yet.

Past Perfect Continuous используем, когда нам необходимо отметить длительность действия. В иных случаях, когда нам необходимо отметить, что деянье произошло, используем Past Perfect.