There are many grammatical errors There are many grammatical errors in the book. It doesn't mention a lot of exceptions. So the students have a lot of questions and it's really difficult for the teacher to handle all of them.

Fire customer support people Just had the most ridiculous conversation with not 1 but 2 (supervisor) customer service people..... First from Philippines who COULD NOT UNDERTAND AND ANSWER BASIC QUESTIONS RE: no issues received for 3 months. Both she and supervisor (American who spoke English) could not listen or understand the problem. Each gave different info re: problem, then adding 3 more problems. Glad to find N G complaint site....seems I experienced same problems with customer service. Simple questions, rude etc etc etc....... ....will not renew current sub...

Subscription to spam National Geographic used to be a very respected journal. Now, they teamed up with Lindblad Expeditions. Once you subscribe to National Geographic, they sell your address to Lindblad Expeditions without asking for your permission, and you start getting catalogues of offensively expensive travel offers, tens of thousands of dollars per trip, from Lindblad Expeditions, and it is impossible to stop. Cancelled National Geographic because of Lindblad Expeditions spam. Called National Geographic for help to stop the spam. Looks like the spammers may be their partners. The frequency of spam got less but did not stop. Please, save your sanity and DO NOT SUBSCRIBE TO NATIONAL GEOGRAPHIC!!!

For a magazine of such standing National Geographic Digital … For a magazine of such standing, I am sorry to say that their digital version service is atrocious ! I have a paid membership which does not allow me to read any articles which are emailed to me on a daily basis. I have tried every single path, to read the articles, to no avail. A total waste of money!!

Digital membership didnt work; no service Signed up for a paid digital membership: content was good, when I could read it. Every article I tried reading would hit me a paywall popup telling me to subscribe, despite the fact I am was subcribed, logged in, and paying. Sometimes they would go away after waiting a while, sometimes the payway would not go away. Customer service sucks. They don't even respond. Never responded to multiple emails requesting they cancle my membership and stop charging me.. Tired of having my mailbox filled up with stuff I cant read, I clicked unsubscribe. Nat geo site responds 'it may take 10 days' for the system to stop spamming me. 10 days? Hell even junk mail marketing from boner pill salemen will stop immediately when you hit that unsubscribe button.. Nat geo/disney, you suck