We should show our ID card when we are checking in at the departure lounge.
举一反三
- We should show our ID card when we are checking in for the international flight.
- What should be required when checking into hotels? ( ) A: the room card B: the credit card C: the cash D: the ID card or passport
- To show our seriousness, we should stand as we are singing an opera.
- We should _____ our parents when they are old.
- As a speaker, we should speak fast to show our fluency.