The rule was understood.
It was learnt.
The invitation will be accepted.
The letter will be posted.
Music is heard.
The first prize was won.
The question was settled.
Your report must be divided.
He will be sent.
The book will be discussed.
The essay must be handed.
He was told.
The article was published.
The lecture was attended.
A taxi was called.
The young man was introduced.
The mobile phone mustn’t be used.