again and again, come to the idea,in many ways，come about，follow， most of the time，laugh at

1. To finish your task, you should         these steps.

2. Use your head,and then you may          of your invention.

3. The old worker is able to find new ways of solving problems      

4. Robots can help us      in the future.

5. When I face new difficulties，new inventions may      

1..follow

2. come to the idea

3. most of the time

4. in many ways

5. come about

題目來源：仁愛英語同步練習(xí)簿九年級上下冊 > Topic 1 When was it invented？

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