For the first question:

1. The word that has a different highlighted vowel sound is **take**. The other words (walk, call, talk) have a similar 'a' sound, while "take" has a long 'a' sound (as in "cake").

For the second question:

1. The word with the different main stress is **furnish**. The other words (tonight, reason, promise) have the primary stress on the last syllable. "Furnish" has the primary stress on the first syllable.

For the second multiple choice:

2. The word with different stress placement is **decisive**. The other words (commercial, powerful, electric) have the stress on the second syllable, whereas "decisive" has the stress on the second syllable as well, but can often be perceived as having a different rhythm compared to the others. However, the clearer distinction could be debated, and the main stress pattern is more closely related among the options.

If you need more clarity or assistance, feel free to ask!