What does the word "they" in paragraph 2 refer to?

Đề ĐGTD Tiếng Anh chính thức 2022 - mã đề 302

Mark the letter A, B, C, or D on your answer sheet to indicate the best answer to each of the following questions.

The university offers a lot of free services, but not many students _______advantage of them.

Đề ĐGTD Tiếng Anh chính thức 2022 - mã đề 302

Mark the letter A, B, C, or D on your answer sheet to indicate the best answer to each of the following questions.

A huge ________was lifted from my shoulders when I could finally tell my parents about my problem.

Đề ĐGTD Tiếng Anh chính thức 2022 - mã đề 302

Mark the letter A, B, C, or D on your answer sheet to indicate the best answer to each of the following questions.

I'm sorry I didn't tell you that the meeting was cancelled. It must have ________.

Đề ĐGTD Tiếng Anh chính thức 2022 - mã đề 302

Mark the letter A, B, C, or D on your answer sheet to indicate the best answer to each of the following questions.

__________, you wouldn't have made so many mistakes.

Đề ĐGTD Tiếng Anh chính thức 2022 - mã đề 302

Mark the letter A, B, C, or D on your answer sheet to indicate the best answer to each of the following questions.

He said, "I visited both Yugoslavia and Indonesia as a boy with my grandfather."

→ He __________.

Đề ĐGTD Tiếng Anh chính thức 2022 - mã đề 302

Mark the letter A, B, C, or D on your answer sheet to indicate the best answer to each of the following questions.

One of the boys________, but I_______ in and ________him.

Đề ĐGTD Tiếng Anh chính thức 2022 - mã đề 302

Mark the letter A, B, C, or D on your answer sheet to indicate the best answer to each of the following questions.

The plane has ________ built-in stereo tape-recorder which can play for_____ whole four hours.