Анонимно

раскройте скобки и поставьте глагол в соответствующем времени группы perfect
1. He (to write) just letter.
2.By last Monday l (to read) funny stories by O Henry.
3.They (to bring) you this book by tomorrow`s morning

Ответ

Анонимно
He has just written letter.
By last Monday I had read funny stories by O Henry.
They will have brought you this book by tomorrow 's morning.