2. It is one of the challenges... whenever they need.
举一反三
- 中国大学MOOC: 2. It is one of the challenges operators of last-mile delivery need to face, keeping customers fully informed of the position of their orders whenever they need.
- （） urgent the situation may be, you will need to make one change at a time and then move on A: As B: Whenever C: However D: Whateve
- After-reading exercises 2 Match the questions1-6 with the answer A-G. There is one answer that you will not need.
- You need to experience many challenges in order to enter college
- One of the unique challenges about poster sessions is that __________.