The knife and fork are discharged into the tray, indicating that the dish has been eaten and can be withdrawn.
举一反三
- All that can be eaten ___ eaten up. A: have been B: had been C: has been D: are being
- 50. All that can be eaten _______ eaten up. A: are being B: has been C: had been D: have been
- can benefit our health. There has been no result indicating virtues such as gratitude
- There has been no result indicating virtues such as gratitude can benefit our health.
- The way of placing fork and knife can convey the information whether a diner has finished his or her meal.