byhisfriendsandrelations，hedecidedtosendhisinven...

问题详情：

        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  

【回答】

C

知识点：非谓语动词

题型：选择题