Choose the best answer among A, B, C or D that best completes each sentence.

________ is a term that refers to the existence of different kinds of animals and plants which make a balanced environment.

Đề thi THPT QG 2021 – mã đề 403

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.

When the visitor saw with her own eyes the beach covered with a mountain of plastic rubbish washed up from around the world, a chill went down her _______.

Choose the best option to complete the following sentences.

Since the appearance of electronic devices, lessons have become more and more _____ and effective.

Choose the best option to complete the following sentences.

Do you think there would be less conflict in the world if all people __________ the same language?

Choose the best option to complete the following sentences.

_________ will lead to the extinction of rare animals due to the loss of their habitats, and extreme floods and land erosion.

Choose the best option to complete the following sentences.

The Vietnamese government has done a lot to ___________ hunger and poverty.

Choose the best option to complete the following sentences.

Global warming has had negative impact ______ our environment.

Choose the best option to complete the following sentences.

To ___________ is to keep and protect something from damage, change or waste.