Вставьте артикль где это необходимо срочно нужно пожалуйста помогите 1) My friend has....very good computer 2) There is....very good piano in ...hall 3) This is...very difficult question 4)I do not know ...answer to this question 5)She is...pupil of our....school 6)My unde is....specialist in....biology 7)We have....lessen on....mathematics today