Here are the answers for the underlined parts that differ in pronunciation:

**Question 1:** B. purchase
**Question 2:** C. contest
**Question 3:** C. debut
**Question 4:** B. contest
**Question 5:** C. commemorate
**Question 6:** D. moment
**Question 7:** C. establish
**Question 8:** D. talent
**Question 9:** D. nest
**Question 10:** C. talent

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