He listened to the teachers very carefully.(改为否定句)

问题描述:

He listened to the teachers very carefully.(改为否定句)
He read something interesting and laughed.(改为否定句)
They starten their family business two years ago.(改为一般疑问句)

He didn't listen to the teachers very carefullyHe did not read anything interesting and he didn't laugh Did they start their family business two yes ago?