New ways have been found to prevent the river ______.
| A．not to be polluted | B．against polluting |
| C．from polluting | D．from being polluted |
相关知识点
推荐试卷
New ways have been found to prevent the river ______.
| A．not to be polluted | B．against polluting |
| C．from polluting | D．from being polluted |
试题篮
()
粤公网安备 44130202000953号
