IELTS, TOEFL books wanted (Beijing)

Dear members of BJ community,

If someone of you happen to know where I can get books for ILETS and TOEFL tests preparation, please, share the information. I am looking for original ones, without comments in Chinese, etc. Also, my friend needs to buy some books for those who study spanish and prepare for spanish exam. I heard there is Institute of Servantes here in Beijing, but I am not sure whether they have any bookshop or something like this. Will appreciate any piece of information.