The incomes of skilled workers went up. ______, unskilled workers saw their earnings fall.
We are going to have a barbecue _______ it rains .
He wouldn’t give up smoking _______ his doctor told him it was a matter of life and death.
I sent the letter early that morning _______ she got it that afternoon.
______ did it , I didn’t.
_______I know , the computer can never take the place of the human brain.