mybrotherwasinhisroom,______inhisexperiment.a:absorbb:toabsorbc:absorbingd:absorbed请问选哪一个答案,为什么?
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题目内容：
my brother was in his room ,______ in his experiment.
a:absorb b:to absorb
c:absorbing d:absorbed
请问选哪一个答案,为什么?
优质解答
答案是D.be absorbed in something 的意思是“全神贯注于”.
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