while intelligent people can often ____ the complex ,a fool is more likely to complicate the simple .
—Growing population resulted in growing rubbish. —There is ______that rubbish will become the major threat to human beings in future.
—Happy birthday to you! — ______.
— Have you read this book? — Yes. But that one is ________ worth reading.
Maybe you have been to many countries, but nowhere else ___ such a beautiful palace.
—How are you getting on with your business? —I'm glad to say it is ________.