Choose the best answer.

Sarah and Kathy are talking about bad habits of children

- Sarah: “Children under ten shouldn't stay up late to play computer games.”

- Kathy: “_______.”

Choose the best answer.

You may find doing this job very _______. Try it!

Choose the best answer.

Kate Bouman is ______ scientist whose algorithm allowed researchers to take _______ first ever image of a black hole.

Choose the best answer.

If a machine stops moving or working normally, you can say that it has ______ .

Choose the best answer.

The fire was so important to early cultures that scientists now study it to learn more about ancient civilizations.

Choose the word OPPOSITE in meaning to the underlined part.

This task is not rocket science. Just focus on observing this reaction and you can reach a conclusion on chemical properties of bronze.

Choose the word OPPOSITE in meaning to the underlined part.

Vietnamese have a strong sense of hospitality and feel embarrassed if they cannot show their guests full respect by preparing for their arrival.