Choose the best option to complete the following sentences.

 Drinking water in this area is highly ___________ by waste.

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.

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

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

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

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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.