----- it was a holiday, the doctor performed the emergency surgery on the heart patient .
----- it was a holiday, the doctor performed the emergency surgery on the heart patient . Correct Answer Although
You use although to introduce a subordinate clause which contains a statement which makes the main clause of the sentence seem surprising or unexpected. Although I was only six, I can remember seeing it on TV. Although he was twice as old as us, he became the life and soul of the company.