I don't know why the answer is 'some'.

Could you tell me the difference among those choices?

 

 

A: We need more pillows.
B: Why don't we buy _________________?


a) it
b) ones
c) some
d) any

Original Post

Hi, Sly,

"it" would work in reference to a singular, definite noun:

A: I like that pillow.
B: Why don't you buy it?

"ones" only works if accompanied by some modifier:

A: These pillows are too old.
B: Why don't you buy new ones?

Only "one" (in the singular form) works alone:

A: I need a pillow.
B: Why don't you buy one?

The difference between "some" and "any" is that, with "some," an affirmative answer is expected. "any" is used in real, open questions. Notice that Why don't we buy some? is equivalent to Let's buy some (Let's buy any would be incorrect).

Last edited by Gustavo, Contributor
Gustavo, Contributor posted:

Hi, Sly,

"it" would work in reference to a singular, definite noun:

A: I like that pillow.
B: Why don't you buy it?

"ones" only works if accompanied by some modifier:

A: These pillows are too old.
B: Why don't you buy new ones?

Only "one" (in the singular form) works alone:

A: I need a pillow.
B: Why don't you buy one?

The difference between "some" and "any" is that, with "some," an affirmative answer is expected. "any" is used in real, open questions. Notice that Why don't we buy some? is equivalent to Let's buy some (Let's buy any would be incorrect).

Thanks for your kind and easy explanation.

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