【R】評論

Studies showed that about 40% of people sometimes sleepwalk.Sleepwalkers walk slowly in the house,say something, and then go back to sleep.They are sleeping, but their eyes are usually open and look right through you.(A)The next day, they don't remember anything. They even don't know what happened the night before.(D) Why do people sleepwalk? We still don't know.   But people found something about sleepwalking. For example, if he / she is not happy, gets sick or doesn't sleep well, he / she is more likely to do so. It happens to many children between four to twelve years old. It could run in families. That means, (B)if one parent is a sleepwalker, their children can be, too.    Because the sleepwalkers are "sleeping" and don't know what they are doing, it is important to keep them safe and (C)not to wake them up.