I am in karachi, because Karachi is a city and you can't be "at" a city. Saying I'm at only works if it a place such as a grocery store or a mall, but does not apply to cities or countries.
Answer:
c. come
Explanation:
Did He Come Here Yesterday?
Taking a shower before bed, in comparison to the other answers, doesn’t really matter.
An adverb modifies a verb like adjective or another verb it answers the questions when where how and to what extent
