高手帮我看一下这几句英语有什么语法错误或者用词不当?

高手帮我看一下这几句英语有什么语法错误或者用词不当?
(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.
(J) In July,the number of vistors shot up dramatically.
(K) In July,there was a dramatic increase in vistor numbers to just short of 140,000 people,followed by a sudden decline in August.
(L) In July,vistor numbers soared and then suddenly fell back again the following month.
(M) August saw a sharp turnaround in attendences with numbers leaping from just under 80,000 to 140,000 people.
(N) The period between May and September saw a steady grawth in the number of vistors from 70,000 to 140,000.
(O) Attendance at the theme park can be divided into three distinct periods:January to May,June to september and October to December.