填空题 The puzzle was so difficult that I gave up it in the end .
【正确答案】
【答案解析】gave up it直改为gave it up。[解析] 本题考查固定搭配。give up后接名词,如give up smoking;如果宾语用代词表示,则代词多放在介词up前面。故应将gave up it改为gave it up。