Ⅰ.根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。
How to work productively at home
The opportunity to work from home can be a dreaming：no time spent commuting, no sitting in traffic, and the flexibility to work wherever and maybe even whenever you want.__1__ The following tips are proven to help people who work from home maintain their happiness and their productivity.
