What shall we use for power when all the oil in the world has ________?
—How was your recent trip to Jiuzhaigou? —I’ve never had one before.
He must have sensed that I ______ him. He suddenly glanced at me and said quietly, “Why are you staring at me like that?”
It was not until the end of the trip ______ I realized what a good feeling it was to have helped someone in trouble.
As a Chinese saying goes, a mountain ______ be too high or an ocean too deep. Therefore, there is no end to our self-improvement.
Sometimes I act as a listening ear for fellow students ______ what is bothering them.