That she hadn’t kept her ____ on her work resulted in the failure.

These companies succeeded because they were the first companies to make use of the ____________ of the internet and was thought highly of by some experts.

If we keep wasting so much energy, ________ are that our oil wells will dry up and the environment will be destroyed.

A new       to teaching languages is being used here, and it has turned out to be very helpful to the students.

Our milk powder is especially suitable for children under 6, as it helps a lot to build the body's natural ________.