摘要： When I went in, they were in a heated discussion. A. absorb B. absorbed C. absorbing D. being absorbed
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When I went in , they were ____ in a heated discussion .
A .absorb B .absorbed C .absorbing D .being absorbed
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When I went in , they were ____ in a heated discussion .
A .absorb B .absorbed C .absorbing D .being absorbed
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When I went in,they were _______ in a heated discussion.
A.absorb
B.absorbed ?
C.absorbing?
D.being absorbed ?
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