I have a tight budget for the trip, so I'm not going to fly __________ the airlines lower ticket prices.
| A．once | B．if |
| C．after | D．unless |
推荐试卷
I have a tight budget for the trip, so I'm not going to fly __________ the airlines lower ticket prices.
| A．once | B．if |
| C．after | D．unless |
试题篮
()
粤公网安备 44130202000953号
