题目内容：
Then the situation _____________ worse by human error because of the lack of proper training.选择一项：
A.
was
B.
was made
C.
has became
参考答案：
选择题：Then the situation _____________ worse by human er
- 题目分类：国家开放大学管理英语3.
- 题目类型：选择题
- 查看权限：VIP
选择一项：
A.
was
B.
was made
C.
has became