Образуйте множественное число от приведенных существительных: sister, friend, house, pencil, question, railway, street, brother, child, activity, man, student, woman, text, rally, half.

Множественное число: sister - sisters, friend - friends, house - houses, pencil - pencils, question - questions, railway - railways, street - streets, brother - brothers, child - children, activity - activities, man - men, student - students, woman - women, text - texts, rally - rallies, half - halves.