Reading and comprehension skills need continual practice. The reading and listening passages need to be diverse and increase in difficulty, as do the inferencing questions that get asked.
There is no effective way to learn and improve reading, listening and comprehension skills other than to use well-calibrated comprehension and reading content with well-structured assessment questions.
Presto Learning has a comprehensive library of English skills activities. There are over 480 curriculum-aligned resources that cover a range of topics including:
Grammar, Punctuation, Sentence Structure, Voice, Tense, Comprehension, Reading, Listening and Speaking activities, to name just a few.