Here are the best options indicating the words or phrases opposite in meaning to the underlined parts:

1. **memorable** - A. awful (This indicates an opposite meaning as "awful" reflects something that is not memorable).

2. **different** - B. modern (In this context, "modern" can imply a state of being similar or current as opposed to traditional, making it a relatively opposite contextually).

3. **positive** - B. negative (This is a direct opposite, as "negative" indicates an unfavorable interpretation).

So the answers are:
1. A
2. B
3. B