...... (she / study) French all morning in preparation for her final exams?

How long ...... (your brother / teach) Spanish by the end of the year?

...... (they / live) in the house for more than ten years when we move in?

How long ...... (the headmaster / do) his job in this school when you retire?

...... (he / clean) the windows all day long when you come home?

How long ...... (you / operate) this machine by the end of next week?

...... (the students / learn) to cook for three or four months by the end of January?

...... (the host / play) loud music all day by the time you arrive at his place?

...... (you / try) to sell your flat for more than just a month by the end of the year?

...... (the young guys / party) for more than two months by the end of the summer?

...... (you / stay) at the hotel for more than six weeks by the end of the month?

How long ...... (they / offer) you the job by the end of the month?

How long ...... (the police / search) for the stolen goods by the end of the quarter?

How long ...... (your neighbours / have) those all night parties by the end of the summer?

...... (you / give) private Spanish classes for a long time by the end of the winter?