If you have a problem with "we close / open at 9" then simply think of it as "we close / open the store at 9". The store is implied and this particular usage is very common and certainly not specific to English. I would use that same phrase in my own language.
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sanjeevabhujang can u please tell me what this means"cracking gre has never been easy"?from what i understand is,it means that gre is tough and it is never easy to crackPlease, ask this question in a new thread.