Составить 5 предложений с геррундием, чтобы он (геррундий) являлся подлежащим

Smoking is bad for your health 2 Swimming is good for you 3 Building a house is difficult work 4 Learning English is fun 5 Forgetting new words is a problem

Learning foreign languages is essential for a successful life.
Swimming can help you improve your health.
Eating a lot of sweets leads to overweight.
Reading good books broadens people's outlook.
Listening to music is my favourite leisure activity.