Turn the given sentences into affirmative ones. (Преврати заданные предложения в утвердительные предложения). Знаки препинания даны.

Example:
«Has he written the letter?»

Answer:
«He has written the letter».

1. Has Kate cooked spaghetti?

Kate has cooked spaghetti.

2. Jack hasn't washed the dog.

Jack has washed the dog.

3. Have they gone to London?

They have gone to London.