How long have you been studying at this school? — I have been studying here­­­­____.

Only when the meeting began _______ that he had left his papers at his office.

We saw the dog jumping into the room_____ window. [ ]

I’m going to buy a car. Any advice, Charlie?—Well, it depends on(根据) ________. If money isn’t a problem, you can buy a BMW.

What does your father often do _____ his spare time?[ ]