He didn’t go into detail on this subject; he spoke ________.[ ]

Pleasant music is often played _________ classes to make students refreshed and relaxed for a while

I have made ________ new friends here that I really enjoy my school life.

She showed the visitors around the museum, the construction ________ had taken more than three years.[ ]

How was your interview for going abroad to study—Oh，I couldn’t feel any________I hardly understood most of the questions they asked