Passive voice

They have cancelled my doctor’s appointment again.

My doctor’s appointment

The nurse was changing my dad’s bandage when we walked in.

My dad’s bandage

Companies will use less plastic packaging in the future.

Less plastic packaging

We need protein in our diet.

Protein

They built the hospital about ten years ago.

The hospital

Penicillin

In 1928, Penicillin ¹

He found the substance growing on a dish that ²

He observed that bacteria in the dish ³

Fleming experimented with penicillin for a decade, but in the end, he handed over his research to scientists Howard Florey and Ernst Boris Chain so that they could develop a way to mass-produce it. Penicillin ⁴

Today, however, it ⁵