Here are the odd ones out from each group based on their categories:

1. **Group 1:**
- Odd one out: **A. Vietnamese** (It's a nationality, while the others are adjectives.)

2. **Group 2:**
- Odd one out: **B. until** (The rest are adjectives or adverbs; "until" is a conjunction.)

3. **Group 3:**
- Odd one out: **C. last night** (The other words are prepositions or pronouns; "last night" is a noun phrase.)

4. **Group 4:**
- Odd one out: **C. translate** (The others refer to pronouns.)

5. **Group 5:**
- Odd one out: **B. he** (It's a pronoun, while the others are possessive pronouns.)

6. **Group 6:**
- Odd one out: **A. my** (It's a possessive pronoun, the others are verbs or adjectives.)

7. **Group 7:**
- Odd one out: **B. automatically** (It's an adverb, while the others are adjectives.)

8. **Group 8:**
- Odd one out: **A. lovely** (It's an adjective; the others are adverbs.)

Each identified "odd one out" relates to differences in part of speech or category.