16.

  1. She was with a patient.
  2. She was away on vacation.
  3. She was talking to his secretary.
  4. She was operating.

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17.

  1. His false teeth didn't fit.
  2. He broke his legs.
  3. His feet were badly hurt.,
  4. He cut his fingers.

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18.

  1. For a few days.
  2. For a few weeks.
  3. For a few months.
  4. For almost a year.

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19.

  1. Angry.
  2. Sympathetic.
  3. Indifferent.
  4. Annoyed.

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20.

  1. This evening.
  2. This afternoon.
  3. Before lunch.
  4. After lunch.

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W:Good morning. Dr. Ellis' office.
M:This is Mr. Jackson. May I please speak with the doctor?
W:The doctor is just finishing with a patient. Would you hold on for a minute? Here is the doctor now. I'll tell her you're on the line.
W (Another woman): Mr. Jackson. Dr. Ellis here. How's that new bridge?
M:Not so good, doctor. That's what I'm calling about. It just doesn't seem to fit right.
W:Well, that's to be expected during the first few days after it has been put in. As I told you, there will be no complications.
M:It hurts so much, especially when I eat. I keep removing it afterwards, you know.
W:I understand, Mr. Jackson. It does hurt in the beginning, I know. But it would be better if you didn't remove it, except when cleaning it, of course.
M:Well, I did at first, doctor. But my gums hurt so much that I just can't stand it any longer.
W:Well, maybe we can adjust a little more.
M:Adjust it?
W:Yes, file it down a little here and there. When can you come in?
M:Oh, right away, doctor, if you don't mind.
W:Let me see. I'll check here now. Maybe I can find the time for you this morning.
M:Oh, I can wait until this afternoon if you're too busy now.
W:Sorry, Mr. Jackson, but I'd rather you'd come this morning if possible. This afternoon I'm teaching a class at the dental school. Just a minute, Mr. Jackson. Can you get here about 11:30? That will give us enough time before lunch. We'll see what we can do.
M:Oh, yes, doctor. I can make it. Thank you. See you then.