II. Reading 1. Read the passage and answer questions.
question 1:how many hours of sleep should an adult slep at the night? 2:How many hours of sleep should little children sleep at night? 3:Can sleep affect life expectancy? 4:Is sleep an essential or a comfot? 5:According to experts,is the brain active when we arw asleep? What do after-school activities đó tớ our sleep
