Things are ____ on the moon ____ on theearth .

Some drivers drive _____fast that they make people ______ are trying to cross the road afraid.

24 You ought to have put the milk in the refrigerator, and now ________sour

The earth（地球） is our home, and we must _____ it clean.

To our delight, these peasants first ______ of poverty are not only widening their roads to wealth, but doing what they can to help others in need[ ]