Ответ:

You have tidied your bedroom.

Susan is a good student.

My friends haven't arrived yet.

Our cousins can't speak Italian.

Linda loves cakes.

I didn't see him.

Lillian should go to school early.

We must obey the instructions.

They won't be long.

I go by train at 3 p.m.

Ken didn't wash his car yesterday.

(Наверное так, но я не уверена на 100%)