[单选] Please Be Quiet 请安静 It"s Saturday today．Sam and Amy are making a cake for their mum and dad．Dad is reading a book．Mum is writing a letter．Oh， no! The noise is loud． Dad and Mum can"t work． They say， Please be quiet! We"re working!" Now Sam and Amy are in their room． Sam is playing the drums． Amy is playing the piano．The noise is very loud．Mum and Dad say，"Oh no，go and make your cake．"基础练习I．Multiple choice．单项选择。1．What day is it today？