题目内容
| If _____ unsolved, this may lead to more serious problems. |
A. making B. remained C. left D. taking |
试题答案
C
相关题目
题目内容
| If _____ unsolved, this may lead to more serious problems. |
A. making B. remained C. left D. taking |
试题答案
C
_______ unsolved, this may lead to more serious problems.