When ____ to feel unworthy, children often work extra hard to please their parents．

(2014·南京一模)________time at Beijing Normal University，I’m very impressed with the quality of the teachers and students.

________volcanoes now for many years, I am still as enthusiastic about my job as the first day I first______.

— O’Neal works hard.— So he does. He is often seen _____ heavily before his teammates have even arrived at practice.   

The children were not allowed ________ the house because it was being painted .