Many companies don’t realize ____ important the customers are, which is why they lose their customer...
2022-06-14 12:37:03 207次 2020届天津一中下学期高三统练英语试卷（三） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
Many companies don’t realize ____ important the customers are, which is why they lose their customers unconsciously.
A.what B.whether C.how D.which
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