Wind power is an ancient source of energy ____ we may return
| Wind power is an ancient source of energy ____ we may return in the near future. |
| [ ] |
| A. to which B. by which C. from which D. on which |
可能相似的问题
你能帮帮他们吗
| Wind power is an ancient source of energy ____ we may return in the near future. |
| [ ] |
| A. to which B. by which C. from which D. on which |
你能帮帮他们吗