Choose the appropriate adverb using the hint given:
She was _________ sad after seeing her results. (Use degree)
The given sentence needs to be filled with an adverb of degree. An adverb of degree explains the intensity of the action. Thus ‘very’ is the apt answer. Hence option C is correct. Whereas ‘everyday’ is an adverb of frequency, it tells us how often the action takes place, i.e. the rate of occurrence. Hence option A is incorrect. Similarly ‘last night’ cannot be used because it is an adverb of time. It tells us when the action happens, i.e. the time. So option B is incorrect. ‘Upstairs’ is an adverb of place. It explains where the action happens or where someone is going and is not used to indicate the intensity of the action. Therefore option D is incorrect.