7.Mary:Do you know why he _____very sad these days?

likes,do,art,why,you,mary,know连词成句 Do you know these? do you know these i do't know why this days he looks tired these days.Yes,i think so.you know he works() Do you know why he isnt in的同义句 Do you know why he is a___ good health? Do you know why he isn't in?同义句 what do you do on these days Do you know these people? do you have idea why he ----?a,is looking sad b,looks sadly Do you know?I am sad!very sad!