through the project ,many people have received training and_____________(决定自己创业).标准答案是decided to start their own business.我想知道decided to do business by themselves. 可以么?我想问的是说从语法上来讲，我那种说法成立么？

through the project ,many people have received training and_____________(决定自己创业).
标准答案是decided to start their own business.
我想知道decided to do business by themselves. 可以么?
我想问的是说从语法上来讲，我那种说法成立么？