This is _____ ID card and that is _______ book. A. a, an B. an; an C. an; a
The doctor asked her__________ more fruit.
Thank you very much for __________ us so well.
Tom and Mary _______ to China last month.
--- What’s the use of this kind of fuel(燃料) ? --- It can make the train __________ fast.
---Help yourself to some chicken , Jim . ---__________________