高手帮我看看,这几句英语有什么语法错误或者用词不当?

高手帮我看看,这几句英语有什么语法错误或者用词不当?
百度改版改的真垃圾！
(A) In the last three mounth of the year,attendance were off their september peak,falling back by 300,000 vistor a mounth till the end of the year.
(B) during last year,the trend was obviously upwards.
(c) Numbers picked up in June,rocketing by almost 400%.
(D) There was a marked improvement in July with the number of vistors surging 500%.
(E) From may through to september,the number of people visting the theme park mounthly rose approximately 70%.
(F) During the first four months,vistor numbers rose gradually.
(G) The gradual rise in vistor number numbers from 30,000 to approximately 45,000 in the first four mounth was followed by a shaper incrase in May.
(H) Between Apirl and May,the increase in the number of vistors was at a much slower pace than in the previous three mounths.
(I) It is clear that for most of the year,monthly attentnces were above trend.