The question that puzzled them is ____ they can get rid of the air pollution in the area.
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
Now then, children. It’s high time you ______ and dressed.