Remove the batteries when they become weak or when the unit is not in use for extended periods. This will damage to the unit from battery leakage at such times.

Of course, all students want to increase their knowledge, but I believe that most students today want that knowledge to be _______ to their future career.

While there are some differences in the educational systems in many countries in the world, education itself is ______.

I a report about the air pollution in my hometown all the morning and haven’t finished it yet.

What do you think of the film— The story ____is good, but I felt ____because of its length—over three hours.