33._________ in some rural schools that the teacher is even unable to walk through the rows of desks.
_____ full preparations, we decided to put off the meeting till next week.
I’m examining the article he has just finished _____ the possible mistakes in it.
Having passed all the tests, she felt a great weight _____ off her mind.
New ideas sometimes have to wait for years before _____.
How could he get the plan _____ without any one to support him?