. —Do you still go jogging every morning?—Yes, I can’t think of a _______________ way to start a day.

To win in these areas, the firm needs a sustainable __________ advantage.

 This colour TV is very expensive, but not_______.

— You know Mr. Green has been ill for days?— Yes, I wonder if he is ______ better now.

—Growing population resulted in growing rubbish.—There is ______that rubbish will become the major threat to human beings in future.