题目内容
【题目】_______ in doing his homework , he didn’t know I had walked in.
A.Burying B.Buried
C.To Bury D.To be buried
【答案】B
【解析】
试题分析：句意：他在专心做作业，不知道我已经走进来了。be buried in沉思，专心于，被埋葬在。这里主从句主语一致，故选B。
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题目内容
【题目】_______ in doing his homework , he didn’t know I had walked in.
A.Burying B.Buried
C.To Bury D.To be buried
【答案】B
【解析】
试题分析：句意：他在专心做作业，不知道我已经走进来了。be buried in沉思，专心于，被埋葬在。这里主从句主语一致，故选B。