Complete the second sentence so that it has a similar meaning to the first one.

My essay on Nelson Mandela impressed my History teacher.
My History teacher was impressed by my essay on Nelson Mandela.
1. Ten million people in the UK are watching this programme.
2. A lot of people will probably visit the museum next weekend.
3. My father suggested this innovative solution last year.
4. They were organising a book sale for the charity in the morning.​