Исправьте ошибка в данных предложениях

1) его сестра собирается стать врачом. is his sister going to become a doctor? who is going to become a doctor? 2) студенты играют в волейбол на спортивной площадке. are students playing volleyball in the sports ground? what are students playing in the sports ground? 3) мама купила немного яблок к ужину. has the mother bought any apples for dinner? what has the mother bought for dinner? 4) у нас в колледже есть новый компьютерный класс. do we have a new computer class in the college? what new class do we have in the college? 5) я готовил ужин для семьи в 5 часов. was i cooking dinner for the family at 5? who was cooking dinner for the family at 5? 6) нора может хорошо плавать в море. can nora swim in the sea very well? how can nora swim in the sea? 7) учитель находится у доски во время урока. is the teacher at the blackboard during the lesson? where is the teacher at the lesson?