Your only RESPONSIBILITY was to look after your sister, not to stay in the computer the entire afternoon!” (noun)

“The technician came, THUS easily solving the problem that was worrying us at work”. (adverb)

“Do you mind if I take a ride WITH you today? My car is in the repair and it’ll be ready only in the afternoon.” (preposition)

“Aunt Mary let us a message of THANKS on the fridge, since we were working when she left.” (verb)