Why do you look so tired why do you look so tired?

-why do you always look so tired? .—why,Jack,you look so tired! -Why do you look so tired?-There are so many problems___ why do you always look so tired?这是定语从句吗? Why do you look so tired?I stayed(.)the whole night Why do you look so tired?-----We have just returned from ___ ．—Why,Jack,you look so tired! -You look so tired today.-so I___A am B do Why do you look so upset -----Sally,why do you look so unhappy? -Why do you look so happy? Why do you look so angry?