__________is the increase in temperature of the Earth’s atmosphere caused by gases such as carbon dioxide.

Radiation from electronic devices is a(n) __________that can harm our body.

“The destruction of forests is contributing to the greenhouse effect now”, the teacher told his students.

This is my new laptop, __________was bought two days ago.

Global warming is one of the main causes of polar ice__________.

Let me give you my advice. You should use public transport Instead of private vehicles.

III - Choose the correct relative pronouns in the box to complete the sentences.

1.               Minh, __________is my classmate, likes to play computer games.

Jenny’s essay__________is about noise pollution got the highest mark in my class.

I  - Choose the best option to complete each of the following sentences.

Samsung equips a digital pen called S-pen for the Galaxy Tab A tablet that helps users take notes more

easily on a __________.

II- Rewrite the following sentences so that they have the same meanings as the ones given.

1.               “Many endangered species can be protected in national parks”, Mark told his friend.

Don’t discharge waste into rivers and lakes or you will destroy our environment.

The woman__________daughter is a tour guide is very rich.