The sheet must not be spoilt by me.
The sheet must not be spoilt by me.
The sheet was not being spoilt by me.
The sheet was not being spoilt by me.
The sheet is not being spoilt by me.
The sheet is not being spoilt by me.
The sheet does not being spoilt by me.
The sheet does not being spoilt by me.
Correct Answer:
The sheet is not being spoilt by me.
The sheet is not being spoilt by me.