Mark the letter to indicate the correct answer to each of the following questions

Here are the correct answers for each question based on the provided content:

**Mark the letter A, B, C, or D to indicate the word whose underlined part differs from the other three in pronunciation:**

**Question 1:** A. serves (correct option: A)

**Question 2:** C. card (correct option: C)

**Mark the letter A, B, C, or D to indicate the word that differs from the other three in the position of the primary stress:**

**Question 3:** A. express (correct option: A)

**Question 4:** B. chemical (correct option: B)

**Mark the letter A, B, C, or D to indicate the correct answer to each of the following questions:**

**Question 5:** C. has taken (correct option: C)

**Question 6:** A. took (correct option: A)

**Question 7:** B. is he (correct option: B)

**Question 8:** D. taken after (correct option: D)

Let me know if you need any further help!