She was not happy because he had kept her (wait)_____ for half an hour.
举一反三
- There was such a long line at the exhibition ( ) we had to wait for about half an hour. There was such a long line at the exhibition ( ) we had to wait for about half an hour.
- (To wait) in the queue (for) half an hour, the old man suddenly (realized) that he (had left) the wallet in the car.（） A: To wait B: for C: realized D: had left
- How long has she been there(). A: An hour. B: An hour and a half. C: Half an hour.
- We had to wait half an hour ______ we had already booked a table
- There was such a long line at the exhibition ( ) we had to wait for about half an hour.