【小题1】My grandmother is already in her (ninety), but she still does exercise as much as possible every day.
【小题2】---How is your business going? --- Oh, it couldn’t be (bad).
【小题3】No one bought a present for the twins, so they made (they) a model plane.
【小题4】The famous singer’s (arrive) made the fans rather excited.nineties
网友回答
(答案→)nineties
解析：
【小题1】本题的含义为我的祖母已经九十多岁了，in one’s+整十的复数，表示表示几十几岁，故本题空格处填九十的复数形式nineties。
【小题2】本题的含义为你的生意如何，不可能更差了，故本题空格处填差的比较级worse。
【小题3】本题的含义为没有人为双胞胎买礼物，所以他们为了他们自己做了一个模型飞机，故本题空格处填他们自己的单词themselves。
【小题4】本题的含义为著名歌手的到达是粉丝们相当兴奋，故本题空格处填到达的名词形式arrival。