In the past month, cruel snowstorms hit some European countries and America , _________great transportation problems in these countries.
The world ______ is made up of matter.
The reason _______ he gives for not coming is that his mother is ill.
If Bob’s wife doesn’t agree to sign the papers, _______.
She is a beautiful girl and she likes dancing very much. _____.
No sooner _____ the boy fall into the pond than he ____ to his feet and went to the rescue.