Use the words in brackets to fill in the gaps. You can change the words (add or take away prefixes, suffixes, endings, or additional roots) if necessary.

Write one word in each gap.

His parents were extremely kind and [ ]. (welcome)

I would like to express my endless [ ] in this letter. (grateful)

What [ ] and differences do these paragraphs have? (similar)

[ ] learning allows people to develop new skills even after finishing universities. (long)