三年级英语语法练习题Be动词填空：找出句子主语是关键，Here、There看清具体内容是单复数，就近原则注意不可数要用单数，特别是s0me后面跟不可数不要上当注意any要用否定或疑问isn't aren'tTheresome paper on the desk.There any pieces of paper on the desk._you a nurse?_your sister a nurse?How their grandpa?their teacher in the office?their teachers in the office?his teachers in the office?My ears big.My tail _short.I_a dog._you my mother?Yes,I_.Here_your cakes,Alice.