21. The (man) [who heeds the word] wisely will find good.
22. The (package) [that is in the hall] is moving.
() = circle [] = underline
I'm like 80% confident on this one, sorry :/
A force is a push or pull upon an object resulting from the object's interaction with another object. Whenever there is an interaction between two objects, there is a force upon each of the objects. When the interaction ceases, the two objects no longer experience the force. Forces only exist as a result of an interaction.