.At the beginning of class, the noise of desks ____ could be heard outside the classroom.
It is difficult for you to ______ what will happen in space without gravity.
The ______ in the mountain village struck most of the visitors.
Since we have met again after all these years, let's ________ each other from now on.
Have you found his name ______ in the papers?
The schoolboy regretted _______ after he didn't pass his exam.