How does garlic（大蒜） grow？Hu Mengmeng，13，had been thinking about this question for a while． Last term， Hu （1）　　（get） her answer in her schools rooftop garden．

    Hu's school， Tangwai Junior High School in Shanghai， set up a small garden on its teaching building's rooftop in 2015． Each term， students （2）　　（plant） one kind of vegetable． While taking care of them． They also do scientific experiments（实验）（3）　　（learn） more about vegetables．

    Chen Yan， a 14﹣year﹣old girl， （4）　　（study）in this school for one year．Last year，she started to plant garlic with her teacher's help．She wondered how sunshine affected the growth of garlic．She put three pots of garlic in different places to get different amounts of sunlight．Then， she watched their growth every day． Later， she found that the garlic which got the most sunlight （5）　　（grow） best．

    The garden （6）　　（turn） into a fun place two years ago．The students planted different types of vegetables in shapes， such as hearts， or squares in the garden． The different kinds of vegetables made the garden more colorful．

    And that is not the end． Next year， they （7）　　（build） a robot to help with planting，"Students will work with our robot club to build more robots to help with watering． " Mr． Zhou， the school's science teacher said．