You (必须告诉他) when you will return.
举一反三
- When we receive the goods you return to us, you ______ a full refund within 15 days.
- We________ TV when you return home from office.
- When you have finished with that novel, don’t forget to return it to Mark, （） A: do you B: will you C: don’t you D: won’t you
- When you receive something from a foreigner, you had better______. A: accept it B: refuse to accept it C: return it to him D: buy something in return
- 智慧职教: When checking out, you should return the keys.