Alice has cheered the boy up by singing a song改为被动语态

以下这几种说法都是正确的，请挑选吧：
The boy has been cheered by Alice's song.
The boy has been cheered by the song Alice sang.=The boy has been cheered up by the song which Alice sang.
The boy has been cheered by Alice's singing a song.
The boy has been cheered by the song Alice has sung.
希望对你有用~~~~~

The boy be cheered by the sing of Aliice

The boy has been cheered up by a song Alice singing.

The boy has been cheered by Alice's singing a song.

the boy has been cheered up by the song which Alice sang

Alice has cheered the boy up by singing a song改为被动语态

同意一楼的观点！

1. The boy has been cheered by Alice's song.

2. The boy has been cheered by the song Alice has sung.