请根据要求改写下列句子，每空一词。
____ Susan has a good time on her birthday every year. (改为否定句)
Susan    ▲       ▲   a good time on her birthday every year.
____ Xiao Li paid more than 4,000 yuan for his new iPhone 4? (对划线部分提问)
   ▲       ▲   did Xiao Li pay for his new iPhone4?
____ The manager told them to be more creative in their work. (改为被动语态)
They    ▲       ▲   to be more creative in their work.
____ Some children are so young that they can’t tell the bad from the good. (保持句意基本不变)
Some children aren’t     ▲       ▲   to tell the bad from the good.
____ Rose went to the car exhibition yesterday. Danny went there, too. (保持句意基本不变)
  ▲   Rose    ▲   Danny went to the car exhibition yesterday.

为了更好地研究生态系统，美国科学家耗巨资建造了一个模拟地球生物圈的实验基地“生物圈Ⅱ号”．下列关于“生物圈Ⅱ号”实验的说法错误的是（ ）

半折= ____%