题目内容：
21. Mr. Zhang makes _____ a point to keep up with the latest development in his field.
(A) this
(B) that
(C) it
(D) these
参考答案：
选择题：21.Mr. Zhang makes _____ a point to keep up with t
- 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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Mr. Zhang makes _____ a point to keep up with the latest development in his field.
(A) this
(B) that
(C) it
(D) these