Problem: A man is bouncing a tennis ball on a court. he

Answer: serves the ball over the net.

Problem: How to clear blackheads with toothpaste
Select the proper type of toothpaste.
You will need to ensure you use only the proper type of toothpaste. It needs to be the white paste kind, and not the gel kind.

Answer: It should also be the plainest type of toothpaste available, not the whitening or sensitivity kind. A mint-flavoured toothpaste is also helpful.

Problem: How to deal with erectile dysfunction in a relationship
Empathize with each other.
Erectile dysfunction can affect each partner. If you're the partner with ed, recognize that changes to sex might be alarming or different for your partner.
Answer: If you're the partner to someone with ed, recognize how they might feel about their dysfunction and how that might affect their self-esteem or desire to engage in sex. Be loving and empathetic to one another and recognize each other's struggles.