题目内容：
3. All of the plants now farmed on a large scale were developed from plants ____ wild.
(A) that once grow
(B) once they grow
(C) they once grew
(D) once grew
参考答案：
选择题：3.All of the plants now farmed on a large scale we
- 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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All of the plants now farmed on a large scale were developed from plants ____ wild.
(A) that once grow
(B) once they grow
(C) they once grew
(D) once grew