the amount of time something lasts

an amount of something, often expressed as a number out of 100

to become aware of or understand a situation

to learn something so that you will remember it exactly

to tell someone that you are sorry

the measurement from base to top or (of a standing person) from head to foot

The average class _____ in Spain is twenty-two students, whereas in the USA it's eighteen and in Japan it's thirty-five! What's the average in your school?

I'm going to _____ hard for the Physics test tomorrow.

how large or small something or someone is

to express disapproval of someone or something

Do we have to ______ all those irregular verbs for the test?

I want to _____ a good book. Can you suggest anything?

She won't ____ the exam because she's the best in the class.