Какой союз одинаково верно подходит ко всем четырём предложениям? :-\
a) It was stuffy, ____ he opened the window.
b) He goes in for sport, ____ he's very healthy.
c) I don't like to read, ______ I don't have many books at home.
d) She had little food at home, _____ she went to the shop.
Мне кажется therefore. :???