Ответы и объяснения

Лучший Ответ!
We cannot leave the city, because we have not passed exams yet. 
have you ever been to London?
she will buy this dress, when she recives her money.
when he has gone to north, she had heard nothing about him.
he knows languages well and rarely makes mistakes.
1-modal verb + present perfect
2-present perfect
3-future simple+present simple
4- present perfect+past perfect
5- present simple