One of the properties of light is（ ）traveling in wave form as it goes from one place to another.A.itB.it’sC.itsD.their
One of the properties of light is（ ）traveling in wave form as it goes from one place to another.
A.it
B.it’s
C.its
D.their
B.it’s
C.its
D.their
参考解析
解析：该题考查非谓语动词。句中traveling为动名词做表语，空格处所填内容做动名词的逻辑主语，首先排除B，D选项，能做动名词逻辑主语的词有形容词性物主代词，名词所有格或人称代词宾格，故答案为C。
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