It’s everyone’s duty to join the Clean Your Plate Campaign.—Sure. We should try to _______all the food that we’ve ordered.

He was unable to make such progress,__________________.

The students put down their pens when the teacher_____ them to stop writing.

She is looking forward as much to his return as he himself to_______her.

Do you still remember when we went to Nanjing?　　　　— I can’t remember now but ________sometime last summer?