—What color is it? —It’s ____ blue , it’s ____ blue ruler.
He made up his mind to devote his life_______ pollution_______ happily.
The song reminded me of the old golden days as soon as it_______.
In the film Murder in a Country House, a doctor is found _______ in the house, so the film is_______ horror and mysteries.
The book will_______ you when you need help.
Have you heard that the research he spent most of his time_______ perfect success?