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something to keep himself busy. (目的狀語) He went there to work as an inventor.(目的狀語 ) He had so many questions to ask.(定語 ) Thomas Edison once said that _________an inventor, there are some things you have to do. First, you have __________a good plan. Second, you have _______________ that there is a need for your invention. If there is no need, then you can’t make any money on your invention. Third, you have _________carefully. You need _________to the most important idea of your invention and work fro