6、isappeargradually.答案: mixedⅡ.完成句子1.我认为有必要和他谈一谈。Ithink______________________haveatalkwithhim.答案: it(is)necessaryto2.这种游戏玩起来令人愉快。Thiskindofgameis____________________.答案: pleasanttoplay3.我们应当把每天的花费情况记录下来。Weshould__________________everythingwespendeveryday.答案: make