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
- 号外号外：注册会员即送体验阅读点！
A. using
B. to use
C. having used
D. used