The retired professor, _____ in his new book in the past three years, hasn’t realized the decline in his health．
| A．involved | B．being involved |
| C．having involved | D．to be involved |
相关知识点
推荐试卷
The retired professor, _____ in his new book in the past three years, hasn’t realized the decline in his health．
| A．involved | B．being involved |
| C．having involved | D．to be involved |
试题篮
()
粤公网安备 44130202000953号
