Помогите срочно, заранее спасибо

Ответ:

The dessert has been cooling in the fridge for an hour.

I haven't discussed the situation with my parents yet.

We have been waiting for a train since nine o'clock.

My sister has sent three e-mails so far.

I have never beaten an egg before.

The fire alarm has been going off all morning.

Объяснение: