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

______ number of boys were swimming in the lake, but I didn’t know ______ exact number of them.

What is the main topic of the passage?

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 questions.

The brightest and most conscientious students are not encouraged to develop to their full (31)_____.

The phrase "exposed to" in line 2 could best be replaced by which of the following?

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 questions.

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

I wish you ______ me a new one instead of having it ______ as you did.

Mark the letter A, B, C, or D on your answer sheet to indicate the most suitable response to complete each of the following exchanges.

- Mrs. Skate: “How can this dress can be so expensive?”

   - The shop assistant: “_____.”