题目内容：
21. “Smith, you are too old to wax the floor. You’d better have it ( ) by your grandson.” “Oh, it’s a good idea.”
(A) waxed
(B) waxing
(C) being wax
(D) wax
参考答案：
选择题：21.“Smith, you are too old to wax the floor. You’d
- 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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“Smith, you are too old to wax the floor. You’d better have it ( ) by your grandson.” “Oh, it’s a good idea.”
(A) waxed
(B) waxing
(C) being wax
(D) wax