They have just wrote a letter.

The boy has played with a dog.

Нужно оба поставить в отрицательную форму и составить по 5 видов вопросов на каждое предложение!

1. a. They haven't written a letter yet.

b. Have they written a letter yet?

Who has just written a letter?

What have they done?

What have they just written?

They have just written a letter, haven't they?

2. a. The boy has't played with a dog yet.

b. Has the boy played with a dog?

Who has played with a dog?

What has the boy done?

What has the boy played with a dog?

The boy has played with a dog, hasn't he?