Вопрос по английскому языку:

Помогите с английским
нужно выбрать одно из слов в скобках так, чтобы подходило по смыслу и грамматике

It's a bad habit to study (0) (hard / hardly / harder) just before the exams. Some students learn (1) ( quicker / more quickly / most quickly) in groups than alone. Students learn a language (2) ( easier / the easiest / easily ) and (3) ( fast / faster / the fastest ) in the country where it's spoken. You should practise English (4) ( less often / often / more often ) if you want to speak (5) ( fluent / fluently / more fluent ). (6) The ( most effective / more effectively / effective ) way to learn a language is to study it (7) ( regular / regularly / more regularly ). You'll feel (8) ( comfortable / comfortably / the most comfortable ) speaking in a foreign language if you are not afraid of making mistakes. If you have no idea what a word means, look it up in a dictionary (9) (immediate / immediately). Think (10) ( more careful / carefully / most carefully ) before you are going to write an essay. If you finish an activity (11) ( early / earlier / more early ) than your partner, use the time to do some (12) ( additional / additionally ) exercises.