Ответьте дам 15 баллов

1. Who has bought a new book recently? What has has he bought recently? When has he bought a new book?
2. Who has already been to Los-Angeles? Where have we already been to? When have we been to Los-Angeles?
3. Who has already written a report? What has my sister already written? When has my sister written a report?
4. Who has learnt some new words recently? What has the parrot learnt recently? When has the parrot learnt some new words?
5. Who have already seen two tigers in the Zoo? What have the little boys already seen in the Zoo? When have the little boys seen two tigers in the Zoo? Where have the little boys seen two tigers? How many tigers have the little boys seen in the Zoo?