by his friends and relations，he decided to send his invention to the patent office to get recognition for his successful idea．
A. Having pressed
B. Being pressed
C. Pressed
D. To be pressed
网友回答
A. Having pressed
B. Being pressed
(答案→)C. Pressed
D. To be pressed
解析：本题考查非谓语动词作状语。press vt. 催;逼;迫切要求。“在亲戚朋友的督促下，他决定把他的发明送到专利局去，使他的成功创意获得认证。”pressed by是过去分词短语作原因状语，表被动。