We will do our best to solve this problem.

We must cooperate to solve this problem.

His acting has gone up a stage and grade.

There are various classes in this school.

These books are my favorites.

These books are mine.

Those books are my favorite.

The Address Resolution Protocol is a means to identify the physical address of a device on the network.

He emphasized his belief by saying, 'I believe in order to understand.'

This figure is an isosceles trapezoid.