单项选择题
They found the boy crying ______ the corner of the street.
单项选择题 They hurried away ______ fear that should be caught in rain.
单项选择题 When the boy playing by the river fell into the river, I was out of the room ______.
单项选择题 When he was in America, he made a journey of seven hundred miles ______ purpose to get a glimpse of the Niagara Falls.
