“gregory and william will drink.” tem algum erro nesta frase?

you need to include the text. we have no idea what you are referring to

pretty sure 1.someone's coat was found in the lobby.  

the answer is subjective. i personally agree with the first answer for this question.

if one isn't strictly talking about objects then the correct answer would be 'my eyes' since according to this riddle i am asleep and in order to answer/open the door i need to open my eyes first of all.

however, if one is specifically looking for an object, then the first thing i would open would be the door

hope this !