—Whom would you like to be your assistant, Jack or David?  —If I had to choose, David would be ____choice.

I want to send Mary a card. She may ________ it in a few days ________ post. 

Don’t drink ____ water. There is no washroom on the bus.

She is _______of the two. 

--- I can’t afford the white sweater. Can you show me another one?--- What about the orange one? The price is a little ________.