Although he knew little about the large amount of work done in the field, he succeeded ________ other more well - informed experimenters failed.

 --What would you do if you ____ a million dollars?--I’d give it to the charity

_________ your composition carefully, some spelling mistakes can be avoided. 

_____ no need to worry about the problem．The government has promised to have clean water _____ to us from door to door．

That was really a great evening. It’s years ______ I enjoyed myself so much.