Задайте вопросы к предложениям, начиная их словами в скобках: 1. The boys usually keep regular hours. (What) 2. A first-years

1. The boys usually keep regular hours. (What) – What do the boys usually keep?
2. A first-years student has been answering the teacher’s questions for an hour already. (How long) – How long has a first-year students been answering the teacher’s questions.
3. Alex’s fellow-student had read the book before the seminar began last week. (When) – When had Alex’s fellow-student read the book?
4. Laboratory assistants equipped a new complicated experiment last week. (What kind of…) – What kind of experiment did the laboratory assistants equip last week?
5. Researchers will meet at the scientific conference next month. (Where) – Where will researchers meet next month?