Complete the sentences with the correct forms of the verbs below. Don't use contractions.

Write 2–3 words in each gap.

to train, to write, to master, to discover, to build

Finally, I [ ] the art of baking sourdough bread.

She [ ] for a triathlon for half of the year.

He [ ] a book about his travels around the world. It was a bestseller.

I [ ] the secret ingredient for the perfect chocolate chip cookies.

They [ ] a sustainable garden in their backyard. They're environmental activists.