题目内容：
In some languages, 100 words make up half of all words_____in daily conversations. A. using
B. to use
C. having used
D. used
参考答案：
选择题：In some languages, 100 words make up half of all w
- 题目分类： In some languages, 100 w
- 题目类型：选择题
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A. using
B. to use
C. having used
D. used