In English we form adverbs by adding "ly" at the end of the adjective. For example: highly or actively. However, there are some exceptions: the adverb of "good" is "well". Some adjectives don't change like "fast" and "hard". With others you need to watch the spelling: happy - happily. Safe - safely. Terrible - terribly.
In the following exercises decide if you need an adjective or adverb and use the correct form!