Millions of pounds’ worth of damage ___by a storm which swept across the north of England last night.
-You couldn’t have chosen any gift better for me. -______.
-Has Tommy finished his homework yet? -I have no idea; he ____ it this morning.
Mrs. Brown was much disappointed to see the washing machine she had _____ went wrong again.
Last term our maths teacher set so difficult an examination problem _____ none of us worked out.
_____ all the inventions have in common is ______ they have succeeded.