Jack has been___(咳嗽)for several weeks.填什么?为什么?

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Jackhasbeen___(咳嗽)forseveralweeks.填什么?为什么?Jackhasbeen___(咳嗽)forseveralweeks.填什么?为什么?Jackhasbeen___(咳

Jack has been___(咳嗽)for several weeks.填什么?为什么?
Jack has been___(咳嗽)for several weeks.填什么?为什么?

Jack has been___(咳嗽)for several weeks.填什么?为什么?
coughing (因为been后面一定是ing)

coughing
has been doing 现在完成进行时