—How unhappy your roommate looks!—Yes, but he's not willing to tell me what it is ________ is troubling him.
—Would 13:00 be convenient?—________, but I'll have to check my schedule for sure.
—Tom often plays the record very loud at midnight in his apartment.—________!
—I've got something weighing on my mind. Could you give me some advice?—________. Tell me all about it and I'll do what I can.
—I'm so sorry about last night—it was all my fault.—________.
—Shall I help you with the math problem?—________.