составит по три предложения в простом прошедшем и в настоящем совершённом, со словами window suddenly leave throw и break

Past Simple, Present Perfect:

window, suddenly, leave, throw, break

1. Look! They have broken the window.

They broke three windows last week.

2. The boys threw a stone over the fence 10 minutes ago.

The boys have thrown a stone at a stray dog.

3. I think he has left the office.

Yesterday Mr. Green left the office quite suddenly.