He was ______ about his ______ son, who is always skipping classes.
It was in the garden of his old house _______ he grew up that he dug up a pot of gold.
A well-written composition ________ good choice of words and clear organization among other things.
The room is in a terrible mess; it ________have been cleaned.
The British are not so familiar with different cultures and other ways of doing things, ________ is often the case in other countries.
So far this year we _______ a fall in house prices by between 5 and 10 percent.