Vocabulary & grammar

One of the most dangerous environmental problems today is ______ warming.

The Earth is getting warmer because of the __________ effect.

Everyone understands English. English ____ by everyone.

• was understood

• is understood

• are understood

• will be understood

The fire has destroyed the house. The house _____ by the fire.

• has been destroyed

• was destroyed

• is destroyed

• will be destroyed

The teacher told him not to talk in class. He ____ not to talk in class by the teacher.

• is told

• was beeing told

• were told

• was told

Tom is writing an email. An email ____ by Tom.

• is written

• was written

• is being written

• was being written

There is no planet B, so let's protect our "home"! Do you agree? State your reasons.

Are quizzes useful to learn?

• Yes

• No

• Maybe