Final answer:
The words that go with 'endless' are 'perpetual' and 'interminable'. 'Temporary' is the opposite of endless, and 'abhorrent' is unrelated to the concept of duration.
Step-by-step explanation:
The words perpetual and interminable are synonyms for endless, which means continuing forever, without stop or limit. perpetual means never ending or changing, and interminable means incapable of being terminated or having no end. Therefore, the correct answers to which words go with 'endless' are (a) perpetual and (c) interminable. However, the word temporary is the opposite of endless, and abhorrent means inspiring disgust and loathing, which is not related to the concept of duration.