Conditional sentences. Wishes

If Tom had written me a letter, I would ... that he'd moved house.

The oil in a saucepan caught fire, I wish I ... the saucepan on the cooker.

If he ... yesterday, he wouldn't have stayed home from work.

The horseman wouldn't ... if he hadn't ridden so fast.

If the officer hadn't helped the boy, he ... .

If he ... skiing, he wouldn't have broken his leg.

The window ... broken if the wind hadn't blown so hard.

If they ... any money from charity last year, they wouldn't have helped the unemployed.

The librarian .... have been so angry if somebody hadn't torn some pages out of the expensive book.

If he ... to twenty in Spanish, I would say that he knows Spanish.

The tree ... down if it hadn't been struck by lightning.

They won't answer the phone unless they ... at home.