Ms Chan ____ angry unless we ____ quiet. Sharks ____ extinct unless we ____ eating shark fin soup. The temperature ____ unless we ____ energy. You ____ your exam unless you ____ hard. You ____ up late unless you ____ your alarm clock. We ____ water unless we ____ quick showers. Our Earth ____ a lot of rubbish unless we ____ using disposable products. We ____ hiking unless the weather ____ fine. My mum ____ me a new computer unless I ____ full marks in my English test. The landfill ____ full unless we ____ less rubbish.

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