To choose the correct answer for each question, we need to identify the word that does not belong in the group based on a common characteristic shared by the other three words. Here are the answers:

1. **A. sandy** (The other words are verbs, while "sandy" is an adjective.)
2. **C. actual** (The other words are prefixed with "dis-", "un-", and "pre-".)
3. **B. begin** (The other words are nouns or adverbs, while "begin" is a verb.)
4. **A. redo** (The other words are related to transactions or maintenance, while "redo" is a verb.)
5. **B. summer** (The other words are related to frequency or time, while "summer" is a season.)
6. **D. arrange** (The other words are adjectives or adverbs, while "arrange" is a verb.)
7. **B. police** (The other words are verbs, while "police" can be a noun or a verb but is more commonly known as a noun.)
8. **D. ever** (The other words are verbs, while "ever" is an adverb.)
9. **B. appoint** (The other words are nouns, while "appoint" is a verb.)
10. **C. many** (The other words are verbs, while "many" is a quantifier.)