--- Why did you buy two pairs of shoes? --- It was so hard to choose which was________, so I took them both.
Hi, Cindy, how are you? -- ____________
I have ____ English book and ____ ruler.
There will be more trees on _______ side of the river.both B. some C. any D. either
Don’t worry. There is ________ time left.
Everyone ______ be polite to the old people.