B1 - passive voice (review)

The sun first ___ in the sky 4.5 billion years ago.

There are plenty of TV programmes which ___ the problems facing the environment.

In 2015, a solar-powered plane was flown around the world ___two Swiss men without using any fuel at all.

Whales___often hit by boats.

Lots of gadgets that use less electricity ___ in the early-21st century.

The fight to save the last Western Black Rhino ___ in 2011.

Three scientists fell into the freezing sea but fortunately they___ not hurt.

It’s really important that information about the environment ___ in all schools.

Leo Hendrik Baekeland ___ the first plastic in 1907.

Hundreds of empty plastic bottles___ found last month in just one small area of the ocean.

Many new products which help the environment ___ in my country.

I ___ by my teacher to write an essay about the environment.

It ___now known that humans are the cause of climate change.

The Earth ___ by billions of people.

I ___ asked not to use my phone on the plane.