[Grammar] omission of "of"

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Will17

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Mar 28, 2008
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France
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UK
Hello!


Which is the right expression? :

-a couple of days or a couple days?

-She's not sure of what she wants or she's not sure what she wants.

Can we ever use "of" after "sure"?

Thanks a lot
W
 

SoothingDave

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Not a teacher.

Any of those options are fine. They mean the same thing.
 

Heterological

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Joined
Jun 25, 2010
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English Teacher
All of your sentences are fine. You can also use the preposition "about" after "sure."
 
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