add 'ly' > Quickly

add 'ily" > Quickily

delete "k" and add "y" > Quicy

leave it as it is. It's an irregular Adverb > Quick

add 'ly' > Fastly

add 'ily" > Fastily

delete "t" and add "y" > Fasy

leave it as it is. It's an irregular Adverb > Fast

add 'ly' > Easyly

add 'ily" > Easyily

delete "y" and add "ily" > Easily

leave it as it is. It's an irregular Adverb > Easy

add 'ly' > Goodly

add 'ily" > Goodily

delete "d" and add "ily" > Gooily

change it. It's an irregular Adverb > Well

add 'ly' > Nervously

add 'ily" > Nervousily

delete "ous" and add "ily" > Nervily

don't change it. It's an irregular Adverb > Nervous

add 'ly' > Slowly

add 'ily" > Slowily

delete "ow" and add "ily" > Sily

don't change it. It's an irregular Adverb > Slow

add 'ly' > Carefully

add 'ily" > Carefully

add "y" > Carefuly

don't change it. It's an irregular Adverb > Careful

Jackson played very well, and won the match easily.

Jackson played very good, and won the match easy.

Jackson played very well, and won the match easy.

Jackson played very well, and won the match easy.

It was an easy test and I finished it really quickly.

It was an easily test and I finished it really quick.

It was an easy test and I finished it really quick.

It was an easily test and I finished it really quickly.

My dad isn't a very careful driver.

My dad isn't a very carefully driver.

My dad isn't a driver very careful.

My dad isn't a driver very carefully.

Sometimes he drives quite dangerously.

Sometimes he drives quiet dangerously.

Sometimes he dangerously drives quite.

Sometimes he quite dangerously drive.

Please be quiet in the library.

Please be quietly in the library.

Please be quite in the library.

Please quietly be in the library.

You can talk, but not too loudly.

You can talk, but not too loud.

You can talk, but too loudly not.

You can talk too loud, but not.

I didn't do well in the test.

I didn't do in the test well.

I didn't do good in the test.

I didn't do in the test good.

I had a really bad day.

I had a really badly day.

I had a really day badly.

I had a really day bad.

He's quite a nervous person.

He's quite a nervously person.

He's quite a person nervously.

He's quite a person nervous.

He talks really quietly.

He talks quietly really.

He talks really quiet.

He talks quiet really..

He can run fast, but he can't swim well.

He can run fastly, but he can't swim well.

He can run fast, but he can't swim good.

He can run fastly, but he can't swim goodly.

You should drive carefully when it's raining.

You should drive careful when it's raining.

You should drive when it's raining carefully.

You should carefully drive when it's raining.

We can't speak Japanese and French fluently.

We can't speak fluently Japanese and French.

We can't fluently speak Japanese and French.

We can't speak Japanese and French fluent.

She was walking slowly because she was on time for school.

She was walking slow because she was on time for school.

She was walking slowly because she was on time for schoolly.

She was walking slow because she was on time for schoolly.

They did the homework easily because they worked together.

They did the easily homework because they worked together.

They did the homework because they worked together easily.

They did easily the homework because they worked together.