This is _____ ruler, and that is ______ ID card.A.an;an B. a, an C. an,a
There _____ still some milk in the fridge. It’s not necessary to go to the store today.
_____ T-shirt do you like better, the red one or the blue one? I prefer the red one
Your English teacher has never lost his temper, _____ he?
You had better _____ because you have to drive back home.
As we all know, it’s not polite to keep others _____ for a long time.