He has been working so hard. _____ he could answer such a di
| He has been working so hard. _____ he could answer such a difficult question. |
| [ ] |
| A. No wander B. No wonder C. why D. because |
可能相似的问题
你能帮帮他们吗
| He has been working so hard. _____ he could answer such a difficult question. |
| [ ] |
| A. No wander B. No wonder C. why D. because |
你能帮帮他们吗