Adjectives and adverbs
1.I'm not a very (swift)learner
2.I'm not a very (good) baseball player
3.I'm not a very (neat)housekeeper
4.I'm not a very a very (fluent)English
5.I'm not a very (fast) writer

1) I don't learn very swiftly.
2) I don't play basketball very well.
3) I don't keep house very neatly.
3) I don't speak English very fluently.
5) I don't write very fast.

У тебя в скобочках написаны прилагательные, вот предложения с тем же смыслом, но с использованием наречий, образованных от данных слов. Я так поняла, задание было именно такое.