题目内容：

阅读下面材料，在空白处填入适当的内容（1个单词）或括号内单词的正确形式。

It’s surprising how we spend our lives. Reach your 78th birthday and according to some back-of-the-envelope  1. (calculate) , and you will have spent nine of those years 2. (watch) television, four years driving a car, 92 days on the toilet, and so on.

But when 3. comes to time-consuming activities, there’s one that sits head and shoulders above them all.4. (live) to 78, and you may have spent around 25 years asleep. In an effort 5. (regain) some of that time it’s reasonable to ask: how long can we stay 6. (wake) – and what are the consequences of going without sleep?

Any healthy individual 7. (plan) to find out through personal experimentation will find it tough going. If we ignore all these side effects and stay up 8. days on end, our minds become insane（精神错乱的）. We get moody, paranoid（偏执狂的）, and see things that 9. (be) really there. When a shadowy apparition(幽灵) appears on the roadway, so the advice goes, it’s time to pull the lorry over. “People start to hallucinate（幻觉） and go 10. bit crazy,” says Atul Malhotra, the Director of Sleep Medicine at the University of California, San Diego.