A. Where to book a flight online. B. When to book a flight online. C. Who to book a flight online. D. How to book a flight online.
举一反三
- In which ways can you book a flight ticket? A: train station B: official website of the airlines C: online ticket agency D: telephone reservation
- In which way(s) can you book a flight ticket? A: official website of the airlines B: online ticket agency C: telephone reservation D: All above
- Generally speaking, online learning means learning some _________ online.
- 中国大学MOOC: The e-store interact with customers online, process and record the orders online, all the product information is online.
- In view of the convenience of online shopping, I’m _________to buy daily necessities online.