1.A,2.A,3.B,4.B

1.A,2.C,3.D,4.A

you must sleep 8 hours a day 

you shouldn't talk in class

that building is shorter than this building

my class has forty students 

this is my best friend. Her name is Daisy. She is twelve years old and she live in Bristol, England. Daisy is very pretty. She has straight brown hair and dark brown eyes. Her nose is straight and her lips are rather thin. Daisy has medium height,slim and very fit because she learns to dance and shedance very well.Daisy is very friendly and confident and she has a great a sense of humour. l like being with her because she make me feel happy and comfortable!