There is no difference. http://www.thefreedictionary.com/towards

"Oh, so we starve them of oxygen. If I issue any kind of rebuttal, I'm fueling it."

Yes, you can say "the computer can't decide for me." It would be the more usual way to express something like that, for example, in informal speech.

Ah, I had some translations about Texas Hold 'em :) "Make my flush on the river": "The river" refers to the last card that is dealt in Texas Hold 'em and it is dealt face up. Someone would say this phrase if they had 4 cards of a flush in their hand, for example, and they need one more card to make a flush and there was one card left to deal in the hand - the "river" card. They might say (after the hand is over) something like "I had 4 spades and I was hoping to make my flush on the river." It means that they hoped to get a 5th spade dealt to them on the last card so that they would have a flush. (A flush is 5 cards all of the same suit.) "Calling time": This is a little bit more difficult to understand from what I've read, but I think it has to do with timing during the betting phase of the poker. If you look at #4 and #7 on this page: http://www.casinorulebook.com/tournament-texas-hold-em-rules.php It looks like the players can be timed when the turns for betting are going around and if a player takes too long to decide how to bet, another player can call "time" on him. I THINK when you call time on a player, that player might have to decide immediately how to bet, or else not be allowed to play in the hand. Here are some useful references about poker and poker terminology: http://www.cardschat.com/poker/guide/glossary http://www.wsop.com/poker-games/texas-holdem/rules/ http://www.practicalgambling.com/poker_terms.html#T

The first option is British, the second one is American. Both are correct, but the first one sounds "snobby".

"Cost" is the past tense of "cost." If the verb in the sentence that the native speaker corrected was supposed to be in the past tense, then it should, indeed, be "cost." However, if you are speaking in the present tense, then it must be "It COSTS €50" WITH the "s". For example: I had to get a filling at the dentist last week and it cost me €50. But: It costs €50 to get a filling at the dentist. Fyi, I just made up the price. I have no clue how much a filling costs. :)