---- David has made great progress recently.---- ________ and ________.
That young Swedish_____quite still, except that his lips moved slightly.
_____is just like him to want to do something different from everybody else.
How long _____ to finish your composition?
_____ is no difference between A and B. A.There B.Where C.It D.What
___the people have become the master of their own country___science can really serve the people.