Final answer:
The adverbs in the provided sentences are underlined and include words that modify actions or qualities, often with the suffix -ly, such as 'never', 'deeply', 'swiftly', and many others.
Step-by-step explanation:
In the sentences provided, the following adverbs should be underlined:
- never
- more deeply
- quite
- higher, tightly
- immediately
- clearly, swiftly
- patiently
- still, long
- smoothly
- recently
- quickly
- sometimes
- straight, right
- hard
- absolutely
- there, please
- heavily
- exceptionally
- surprisingly
- tomorrow
- really, quite
- still
- unnecessarily
- actually
Adverbs modify verbs, adjectives, or other adverbs, often ending with -ly and providing information about how, when, where, or to what extent an action is performed.