Complete the introduction giving advice on avoiding sports injuries with words from
1)joints
2)muscles
3)ligaments
4)shoulder
5)ankle
6)knee
очень

1) joints

2) muscles

3) ligaments

4) shoulder

5) ankle

6) knee

по идее так подходит:  больше всего у спортсменов страдают связки, мышцы и суставы, у теннисистов - плечи, а у бегунов - коленки и лодыжки

Объяснение:

1. I am having launch

? Are you having launch?

- I am haven't launch.

2. Girls are wearing skirts.

? Are girls wearing skirts?

- Girls aren't wearing skirts.

3. She is visiting her parents.

? Is she visiting her parents?

- She isn't visiting her parents.

4. They are working.

? Are they working?

- They aren't working.

5. My dad is sitting on a sofa.

? Is my dad sitting on a sofa?

- My dad isn't sitting on a sofa.

6. My friends are doing housework.

? Are my friends doing housework?

- My friends aren't doing housework.

7. We are going to a shop.

? Are we going to a shop?

- We aren't going to a shop.

8. Tom is waiting for her.

? Is Tom waiting for her?

- Tom isn't waiting for her.

9. I am watching TV.

? Are you watching TV?

- I am not watching TV.

10. My mom is cooking a cake.

? Is my mom cooking a cake?

- My mom isn't cooking a cake.