Chemical engineering is based in (A) the principles (B) of physics, chemistry (C), and mathematics (D).

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blank 31.

Nowadays a large number of young people spend much time_________the Internet.

The film was really boring. It was _________ I’ve seen.

Mark the letter A, B, C, or D on your answer sheet to indicate the word whose underlined part differs from the other three in pronunciation in each of the following question.

What is the main topic of this passage?

It was not until he failed the final examination _____ he realized how important the revision was.