________ the classroom, the teacher foundall the parents already______ there.

When I called at his home the other day, I found him sitting on an armchair, _____ in his hands. [ ]

ding to scientists, our mental abilities begin to _______ from the age of 27 after reaching the highest level at 22．

Sally _____ a very interesting country. She often gets up _____ night.

Should the present unemployment continue,the society________a more troublesome situation.