Adverbs can be very tricky to identify in the word formation exercise, as well as parts of collocations in the multiple choice exercise. It’s a good idea to review them. In speech, we tend not to use these words to such an extent, relying on adjectives wherever possible, so try and make a point of learning and using adverbs. This is a useful starting point.
A list of 100 adverbs plus a brief explanation of adverbs.