Выберете правильный вариант множественного числа a)child b)childs b)children c)childrens какой ответ, заранее

thanks for your letter. i am study at school. we have  a very  good, kind  and  caring  teachers. they help to us. in our school we have a lot of sport sections. we have bascetball, football and  physical training, where we run and play sport games. around the school we have a stadium and a football field. in winter opened rink for us, where we  skate.  i have  been doing  athletics. every day i do to the stadium. running help me relax and forgot about my problems. in your letter you wrote that you will soon have bascetball match. where has match been? how did you prepare?   what will be the  prize  for winning the  match? i wish fictory for you. hope to hear from you soon.

dear mrs.chatter,i'm going to visit you next friday.

could you tell me please, if my room is big or small? is it sunny or dark? will i have my own bathroom or i will have to share it? what items would you advise me to take from the city? is  your farm big? shall i take my gumboots? dear mrs.chatter, as you know i have a small dog ,may i take it with me? look forward hearing from you.

with love ,

tanya