my brother was in his room ,______ in his experiment.a:absorb b:t_英语解答

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?

人气：371 ℃　时间：2019-09-17 14:46:59

解答

答案是D.be absorbed in something 的意思是“全神贯注于”.