It was not until the age of 60 ______ William Steig discovered his talent for writing children’s books.
We must do something to _____ factories _____waste water into the river before it is cleaned.
What way are you thinking of _____ rid of the flies?
Jack is a good friend _____, he often comes to our home for a visit.
You can say "He went there _____, not _____."
I come to tell you Jack _____ for London next month.