1. These toilets have been out of ____ for a week now. When are they going to fix them? 2. In my ____, humans will never live on other planets. 3. Alexander Fleming discovered penicillin by ____. He didn’t expect to find it at all. 4. I wonder what new technology will be invented in the ____ . 5. Helen couldn't get the experiment to work for ages, but in the ____ it was fine. 6. It's so nice to have my own computer at ____.

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