You're not giving any details of the site. It's impossible to answer such a question. Maybe you're not linking to those pages, or your site has so few backlinks that Google doesn't see any particular reason to visit it more often.

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Submit your pages in google and pinging websites.

Have you enabled crawling in your robots text? Also, have you tried adding your site to the Google webmaster tool? If not, then you should.

Hi,

Resubmit your site to Google Webmaster tool again.

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Inner pages of any website can only be crawled if it is linked with your main domain or with your landing page. Unless and until it is linked with it your inner pages wouldn't get crawled anytime. So, submit it after connecting your inner pages with your main page. It will get crawled within few days only.

Its depend on page quality (content, back link and optimization.

If you feel Google is not crawling you website than go to webmaster tool and fetch your inner pages link manually.Before that check whether robot.txt or any other problem with your inner pages..

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