Words ending in ‘-able’ and ‘-ible’ sound almost exactly the same, so here are some rules about the spelling patterns.
Vocabulary takeaways
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Rise or raise?
When to use ‘rise’ and ‘raise’ (intransitive and transitive verbs).
affect or effect?
This is a common spelling mistake.

willing to or want to?
Are you saying ‘I’m willing to’ when really you mean ‘I want to’? In this lesson you’ll find out the differences so you can use them correctly.

How to improve your VOCABULARY
Vocabulary is what makes language. It is at the core of the IELTS test. So you HAVE to improve it. Here’s are some ways to do that.
The key to addressing, an approach to solving
What’s the difference between ‘a key to solving’ and ‘a key to solve’?
Collocation
Learn how to decrease your thinking time speed up your writing/speaking fluency by learning words that commonly go together.
Extra Reading Practice
Where can I get extra Reading practice?
I’d better
‘had better’ is a less common way of saying ‘should’. See how it works.