A:________________________ [in an elevator]No problem.
A: Have you been here before?
B: Could you please press twelve?
C: Have we met before?
D: Are you a freshman?
A: Have you been here before?
B: Could you please press twelve?
C: Have we met before?
D: Are you a freshman?
举一反三
- You haven’t been here before, ________ (have) you
- You look familiar, have we met before?
- You have never met before, _____ ? A: haven’t you B: do you C: don’t you D: have you
- A:Do you think we have met before?B:I don't thnik so
- Demonstrate that you are ________ of the problem; never give up before you have solved it.