1.Amy came up with a great plan.(改为否定句)
Amy __didn't___ _come__ up with a great plan
2.We gave them old bike to the boy,The boy have didn't have one（合并为一句）
We gave the old bike to the boy __who___ _didnt__have one
3.Jerry repaired his computer by himself.（改为同义句）
Jerry _____made his computer __repaired___ by himself
4.I'd like to make sick children happy.（改为同义句）
I want to cheer up sick children