Here are the best answers for each sentence:

1. **First Sentence:**
**B) looked / were waiting**
This choice correctly uses past tense for both verbs to indicate completed actions in the past.

2. **Second Sentence:**
**B) finished / went**
This option correctly aligns with the use of simple past for both verbs indicating completed actions.

3. **Third Sentence:**
**D) said / had**
This choice correctly uses the past tense and the past perfect for the context described.

So the full answers are:
- 1: B
- 2: B
- 3: D