Many experts stick to the view _____ teacher development is _____ the key to quality education lies.

The children are full of ______. They have been playing all day long without resting.

Thanks to the modern electrical_____, housework nowadays has been made easier and easier.

    If you, the special one in the world, want to show your ______ personality, this T-shirt is exactly what you are looking for.

---What is your favorite______of sports clothing? ---Nike.