Based on the text provided, the best answers for the questions are:

1. For the question about what Ben and Melissa's house has on the roof, the correct answer is:
**D. It has lost of lights on the beam.** (as the other options do not match the context of the text).

2. For what Ben and Melissa do inside, the correct answers are:
**A. They listen to Christmas music.**
**B. They string popcorn.**
**C. They put the popcorn string light on the Christmas tree.**

Therefore, option **D (A, B, C are correct)** would also be correct for the second question.

In summary:
1. D
2. D