_____in the queue for half an hour, the old man suddenly reali
zed he had left the purse in the office.
| A．Having waited | B．Waiting | C．to wait | D．To have waited |
推荐套卷
_____in the queue for half an hour, the old man suddenly realized he had left the purse in the office.
| A．Having waited | B．Waiting | C．to wait | D．To have waited |
粤公网安备 44130202000953号