______ at the party, all her classmates had left.

Vitamin C ______ by the human body. It gets into blood stream quickly.

My brother started studying French three years ago.

Mark the letter A, B, C, or D on your answer sheet to indicate the word that differs from the other three in the position of primary stress in each of the following questions.

She has lived in London for 20 years so she knows the city like the back of her ______.

When people are looking for a great way to (26) ______themselves of boredom, videos found on the Internet are often the perfect solution.

Due to the impact of Covid 19 pandemic, many schools ______ full advantage of the Internet.

What is the main idea of the passage?