_______ we are young, we can still do something to hel
| _______ we are young, we can still do something to help protect the environment. |
| [ ] |
| A. If B. Since C. Because D. Though |
可能相似的问题
| _______ we are young, we can still do something to help protect the environment. |
| [ ] |
| A. If B. Since C. Because D. Though |