12. I (to wait) for a letter from my cousin for a month already, but (not yet to receive) it. 13. She already (to do) her homework for two hours; but she (not yet to do) half of it.

Ответ (EN)

• 12. I have been waiting for a letter from my cousin for a month already, but have not received it yet. 13. She has already done her homework for two hours; but she has not done half of it yet.

Перевод (RU)

• 12. Я уже месяц жду письмо от кузины, но еще не получила его. 13. Она уже два часа делает домашнее задание; но еще не сделала половину.