According to the evolutionary theory of sleep, evolution equipped us with a regular pattern of sleeping and waking for the same reason. The theory does not
Band 3 Practice Exercise I.GRAMMAR Directions: There are 80 sentences in this exercise. Beneath each sentence there are four choices. Choose the word or phrase that you think best completes the sentence
VOCABULARY Section A Directions: There 80 sentences in this exercise. Beneath each sentence there are four choices. Choose the one word or phrase that you think best completes the sentences
GRAMMAR Directions: There are 80 sentences in this exercise. Beneath each sentence there are four choices. Choose the one word or phrase that you think best completes the sentence