17 _____ from my side was it black. 为什么不选still

17 _____ from my side was it black. 为什么不选still

这应该是一道完形填空的选项：题目应该是这样的吧?解答在后面,希望能够有点帮助.
A When I was in primary school,I got into a major argument with a boy in my class.I can't__1__what it was about,but I have never forgotten the __2__ I learned that day.I was __3__ that I was right and he was wrong—and he was sure that I was wrong and he was right.The __4__ decided to teach us a very important lesson.She __5__ both of us up to the __6__ of the class and __7__ him on one side of her desk and me on __8__.In the middle of her desk was a large,round object.I could __9__ see that it was black.She asked the boy what __10__ the object was.“White,” he answered.,I couldn't believe he said the object was white,__11__ it was obviously black!Another !__12__ started between my classmate and me,this __13__ about the color of the object.The teacher told me to go stand where the boy was standing and told him to come stand where I had been.We changed __14__ ,and now she asked me what the color of the object was.I __15__ answer,“White.” It was an object with two __16__ colored sides,and from his side it was white.__17__ from my side was it black.My teacher taught me a very important lesson that day:You must __18__ in the other person's shoes and look at the __19__ through their eyes in order to __20__ understand their view.
17．A.Still B．Since C．Only D．Also ．
答案：C
解析：
1、still 然而；since 因为；only 只是；also 而且.
2、通过上句,从他那面看,物体是白色,只是从我这面看是黑色的.白色,只是从我这面看是黑色的.
3、在only+介词短语作状语是,句子半倒装.（该句属于这种情况）