Read and Complete

Choose the word that best completes each blank.

Sleep is not simply a period of rest. While we sleep, the brain stays surprisingly —activeabsentasleep, sorting through the events of the day and strengthening important memories. Researchers have found that people who get enough deep sleep tend to —rememberremoveresemble new information more easily than those who are sleep-deprived. Skipping sleep before an exam, therefore, is usually a poor —strategystrangerstretcher, even when there is a lot of material left to study.