22. In order to _______ the heart of his former sweetheart, the young man gave up smoking and alcohol, worked extra hard but all his effort ______ waste.
Children who ______ well will be given a red flower and an apple as encouragement.
This job is ______ doing, but it isn’t ______ to spend so much time on it.
Though he is ______ orphan, he is leading ______ happy life.
Information has been put forward____ more middle school graduates will be admitted into universities. A whileB that C when D as
The teacher always waits until all the children ______ before he starts the lesson.