Exercise 1.
Choose the word whose underlined part differs from the other three in pronunciation in the following question.

1. A. great B. storage C. game D. table
   Answer: B. storage
   (The "a" in "storage" is pronounced as /ɔ/, while in the other words, it's pronounced as /eɪ/.)

2. A. waste B. faster C. battery D. great
   Answer: C. battery
   (The "a" in "battery" is pronounced as /æ/, whereas the other words have /eɪ/.)

3. A. navigate B. damage C. danger D. safe
   Answer: D. safe
   (The vowel sound in "safe" is different from the others.)

4. A. great B. battery C. storage D. steak
   Answer: D. steak
   (The "ea" in "steak" is pronounced /eɪ/, while in the other words, the "a" is pronounced differently.)

Exercise 2.
Choose the word whose main stressed syllable is placed differently from that of the other in each group.

1. A. carefully B. extremely C. carefully D. directly
   Answer: B. extremely
   (The stress in "extremely" is on the second syllable, while in the others, it's on the first syllable.)

2. A. navigate B. machine C. happily D. usually
   Answer: B. machine
   (The stress in "machine" is on the second syllable, while the others have stress on the first syllable.)

3. A. quietly B. exactly C. digital D. rescue
   Answer: C. digital
   (The stress in "digital" is on the first syllable, while in the others, it is on the second.)

4. A. wonderfully B. perfectly C. happily D. intelligently
   Answer: D. intelligently
   (The stress in "intelligently" is on the third syllable, while in the others, it's on the first.)

5. A. beautifully B. completely C. finally D. battery
   Answer: D. battery
   (The stress in "battery" is on the first syllable, while in the others, it's on the second syllable.)

6. A. robot
   Answer: No comparison given for Exercise 6.
   (Please provide options for question 6 to determine the correct answer.)