There were no doctors in the poor area, ________ the medical
| There were no doctors in the poor area, ________ the medical team had to work hard. |
| [ ] |
| A. so B. though C. unless |
可能相似的问题
| There were no doctors in the poor area, ________ the medical team had to work hard. |
| [ ] |
| A. so B. though C. unless |