помогите пожалуйста,задайте к этим предложениям специальный вопрос

1.a student missed some lectures last week.
2.human heart works as a pump
3.we have much work to do during the academic year at the college
4.she can make injections well
5.medical students are developing new technique

1.A student missed some lectures last week. When did a student miss some lectures?2.Human heart works as a pump. What does work as a pump?3.We have much work to do during the academic year at the college. During what period of time do we have to do much work?4.She can make injections well. What can she make well?5.Medical students are developing new technique. What are medical students developing?