题目内容
If you want to build a rooftop garden, you should do something except _____.
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After planting the seeds, grass must be kept ______.
______ is not necessary if you want to take care of the planted seeds.
The passage is mainly about the way to ______.
[听力题］ Directions: This section is to test your ability to give proper responses. There are 4 recorded questions in it. After each question, there is a pause. The questions will be spoken two times. When you hear a question, you should decide on the correct answer from the 4 choices marked A, B, C and D.
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