Circle the letter to indicate the word that is different from the other three in the primary stress. ⇱Question 1. A. sunburn B. recycle C. soybean D. acne Question 2. A. service B. develop C. common D. patient Question 3. A. diet B. suncream C. affect D. jogging Question 4. A. collect B. pimple C. gardening D. virus Question 5. A. headache B. disease C. hobby D. yoga Question 6. A. expensive B. popular C. unusual D. condition Question 7. A. exchange B. recycle C. museum D. toothache Question 8. A. homeless B. donate C. affect D. provide Question 9. A. litter B. avoid C. open D. garden Question 10. A. exchange B. habit C. tutor D. village