______to use crutches for six months severely limited Mr. Locke’s ability to work in the shipping facility.

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问题 ______to use crutches for six months severely limited Mr. Locke’s ability to work in the shipping facility.

选项 A、Has
B、Have
C、Having
D、Has had

答案C

解析 联系下文可知limited是动词,所以横线上需要一个能够作主语的词。查看四个选项可知只有动名词having可以作主语,因此是正确答案。
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