题目内容：
(A) on which to base(B) which to be based on
(C) to base on which
(D) on which to be based
参考答案：
选择题：(A)on which to base(B)which to be based on(C)to ba
- 题目分类：郑州工程技术学院-大学英语（2）
- 题目类型：选择题
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(B) which to be based on
(C) to base on which
(D) on which to be based