помагите пожалуйста срочна нужно!!!

Ответ:

2. Have you ever swum in the sea?

  Yes, I have./ No, I haven't.

3. Have you ever climbed a mountain?

  Yes, I have./ No, I haven't.

4. Have you ever been in an aerolane?

  Yes, I have./ No, I haven't.

Объяснение: