Математика 5 класс.Помогите с коэффициентами ​

(Не)случайно, слитно или раздельно пишется?

Исправьте ошибки пожайлуста решите до день 13.05. время 11:15:

.1.If you"ll give me this book,I return it tomorrow.
2.I"ll play tennis with you if the weather will be fine.
3.Dad will watch this film with us if he come home at six o"clock.
4.If Dennis do his homework now,we will play computer games in the evening.
5.We will fly to Moscow if we"ll be good at school.