the or they? I found this sentence in my book here it is :"nowadays, some airline tickets are so cheap that they cost even less than the airport tax." why I think it should be like this :"nowadays, some airline tickets are so cheap that the cost even less than the airport tax." "they" or "the" or mabey "their's cost" Please help, Thanks~

Some questions about dare report Q 1: Their is a summarise about a graph ' In conclusion , the main sales period is in the early part of the year sloping in the summer except for a sudden increase in August.' I was wondering about whether i should put something before " sloping in .. " e.g. " after that(the main sales period) the sales sloping in the summer ...... Q 2: 1. In 1970 the number of meals eaten in fast-food restaurant stood at 20000 per year,which equaled that of sit-down restaurant 2. In 1970 the number of meals eaten in fast-food restaurant stood at 20000 per year,which was equaled the number of sit-down restaurant 3. In 1970 the number of meals eaten in fast-food restaurant stood at 20000 per year,which equaled sit-down restaurant . My question is the three sentences which one is right way or which one is the best?In the first question. My question should be like this: There is a summary about a graph,and this is the sentence summary : “ In conclusion , the main sales period is …… " ADD Question 3 The two sentences : On the first day the number of visits to the Pop Parade stood at 120 000,compared to 40 000 of the Music Choice. On the first day the number of visits to the Pop Parade stood at 120 000,which tripled that of the Music Choice. Is that correct? In the number 2 sentence "….. which tripled that of the Music Choice." or " …. which was tripled that the number of the Music Choice ? " is better? I was confused about this. How to use the word TRIPLE or DOUBLE in this situation ?

chew up ? chew on ? what's the different between chew up and chew on?

"strech belief " and "open the house" ??? What's the means of "strech belief"? is that another way to say "belief" or "something is hard to believe "? When someone says "Do you want to open the house?" It means that clean the house,right? How to use this sentence in real word,please give me some example.Thanks...sorry i can't say that clearly ,I heard these from a TV series "Downton Abbey" ..... Robert: ....by the way, i'll be going up to London next week Cora(his wife):do you want to open the house? Robert: No, no,i'll just take Bates and stay at a club .i won't be more than a day or two. .... ......... V:(Robert's mother):twenty–four years ago,you married Cora against my wishes for her money . give it away now ,what was the point of your peculiar marriage in the first place? Robert: if i were to tell you she's made me very happy, would that stretch belief? V: it's not why you chose her .......

what's the meaning of " it takes one to know one " ??? what's the meaning of " it takes one to know one " ???

"takeaway" ???? I watched a speech on the TED.COM today. By the end of the talk the speaker Cameron Russell she said " ..... If there's a takeaway to this talk, I hope it's that we all feel more comfortable acknowledging the power of image in our perceived successes and perceived failures ." I have no idea about what "takeaway"mean in this sentence and what does all the sentence mean too ... please help me .... http://www.ted.com/talks/cameron_russell_looks_aren_t_everything_believe_me_i_m_a_model.html