Решение:
В этом задании нужно раскрыть скобки, поставив глагол в Present Perfect. Для этого используется вспомогательный глагол 'have' или 'has' (в зависимости от подлежащего) и третья форма смыслового глагола.
- I have read a book. It is interesting.
- He has finished reading the book.
- My sister has made a cake.
- My friend has written an email to me.
- They have bought presents for granny.
- My friends have done their homework.
- I have baked a birthday cake for my mother.