He dosen't know which book he should choose .(同义句)

问题描述:

He dosen't know which book he should choose .(同义句)

He doesn`t know which book to choose.
He has no idea which book to choose.

He has no idea which book he should choose.
He doesn`t know which book to choose.
He has no idea which book to choose.

He dosen't know which book to choose.