Ответ:

Объяснение:

Maria got some bad news last week. She has been sad since she got the bad news.

I started school when I was five years old. I have been at school since I was five years old.

I have changed my job three times this year.

I changed my job three times last year.

The weather was hot and dry for many weeks, but two days ago it rained.

Tom broke his leg five days ago. He's in the hospital. He has been in the hospital since he broke his leg.

Are you going to finish your work before you go to bed? — I have already finished. I finished my work two hours ago.