Fred Grencher was surprised when he tasted his wife's homemade b

Fred Grencher was surprised when he tasted his wife's homemade blueberry yogurt. He didn't expect it to taste so good.(long sentence)
【正确答案】：Fred Grencher was surprised when he tasted his wife's homemade blueberry yogurt, for he didn't expect it to taste so good.
【题目解析】：p29