Read the story and choose the correct answer.
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Keiko is worried about her 72 year old father. He used to be in great health. He played tennis twice a week, went for long walks, and did volunteer work. He was very careful about his diet, too. He ate mostly vegetables, rice, and fish. He didn’t eat too much sugar, salt, or fat. He had a lot of energy, he slept well, and he was rarely sick.
Keiko doesn’t know what happened, but recently her father has changed. He has stopped playing tennis because he says his knees hurt, and he stopped going to his volunteer job. He has been talking naps every afternoon, and he hasn’t been eating enough. He has lost eight pounds. His personality has changed, too.
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Lately, Keiko's father has ________________.
Select one of the following: