These new types of energy from the sun, wind and water cost very little and will never ________.

Would you like some food, Lingling—Sure, I`d like some_______.

The key _____ success is to choose a right goal, plan your path and then get started[ ]

I hope, first of all, that we shall never lose _____ heart in face of _____ failure.

I’m surprised more and more people________participate in the morning exercises in the plaza now.—Morning is a time of day.