1.I haven't decide what i will write about.（变简单句）
问题描述：
1.I haven't decide what i will write about.（变简单句）
是不是I haven't decide to wtite about.（感觉不对,
2.Why don't you pretend to be Jenny's friend?（改同义句）
3.Russian,speak,write,can,both,she,and（连词成句）
答
1.I haven't decide what to write about.此句考如何将宾语从句用不定式改成简单句.
2.Why not pretend to be Jenny's friend?此句考Why don't you=Why not
3.She can both speak and write Russian.此句考both...and...