______ unless I call you.
She took her son, ran out of the house, _______ him in the car and drove quickly to the nearest doctor’s office.
He has called several times this morning. _______, there is something very urgent.
John talked with me for about an hour yesterday. Never _______ him talk so much.
Mother told Jim to ______ the milk until it boiled and then turn off the gas.
Some friends tried to settle the quarrel between Mr. and Mrs. Smith without hurting the feeling of _____, but failed.