5. Write the negative form of the adjectives. Use prefixes: -il, -im, -un, irr, -in.

Here are the negative forms of the adjectives: 1. friendly - unfriendly 2. polite - impolite 3. legal - illegal 4. responsible - irresponsible 5. accurate - inaccurate 6. forgettable - unforgettable 7. comfortable - uncomfortable 8. helpful - unhelpful