Which word is different? a) behind b) though c) across d) through

my name is sam (you can write any name). there are some things, that i don’t like about going to school. first of all i can’t wake up so early in the morning. secondly i don’t like some subjects e.g. maths. thirdly, i am not bothered to do my homework. however, there are some things that i like about school. to start with we got p.e. (physical education(урок спорта в называют p.e.) ) three times a week. also we got history and i like it a lot because we learn many new things. finally in school i meet with my friends and talk to them.

anne was reading a book when suddenly she heard a weird noise. she opened the window but she did not see anything unusual.then a green monster appeared in the garden.at first she screamed in horror but then she realized that it seemed familiar. she turned on the garden light and she was surprised. the wind moved her green dress on the washing line up and down making her think it was a monster.