精选优质文档-倾情为你奉上【Vocabulary and Structure】专项练习100题1. It is well known that Tomas Edison _ the electric lamp.A. discovered B. Found C. developed D. invented2. I couldnt enter the lab because I had _ the key in my office.A. taken B. left C. missed D. got3. I regret _ you that we are unable to offer you employment.A. informing C. to informB. having informed D. to have informed
