my sister is _ _ _in her room三个空,写信,填什么?writing letter 不就可以了?为什么是三个空?

my sister is _ _ _in her room三个空,写信,填什么?writing letter 不就可以了?为什么是三个空? My cousin and I often m_ _ _ a s_ _ _ _ _ _in w_ _ _ _ _. my sister is good at singing.同义句转换 my sister _ _ _ singing The _ is for my sister,Nancy. This woman is my mother's sister._ u _ _ _ m填空 my mother is washing the dishes in the kitchen改为同义句 my mother is _ _ _in the kitchen My sister is good at painting.(改为同义句)My sister _ _ in painting. the food in xian is delicious改为感叹句,要七个单词_ _ _ _ _ _in xian! 英语 改同义句my sister is a student改为同义句 my sister is _ My little sister is _ _ than me.我的妹妹不如我外向. 昨天晚上我乘新车兜风了英文翻译I _ _ _in my new car last night these are my oranges.改单数句式_ _my_.she is my sister.一般疑问句_ _ _sister.tony is his brother.对tony提问_ _his brother.is that your friend?做否定回答No,_ _. Dalian is _ _the _ _in China最繁忙的城市 you father is your_ _ _ _ _ _ _还有.1.Your father's father is your_ _ _ _ _ _ _ _2.Your grandpa is your mother's_ _ _ _ _ _ _ _3.Your mother's husband is your_ _ _ _ _ _ _ _4.Your cou's father is your_ _ _ _ _ _ _ _ _5.Your father's sister is your_ 她正在愉快地度着她的假日英语She is _ _ _ _in her holiday. my sister _(not have)a dictionary. Whose book is this,It’s _.My parents bought it for my sister and me. What is he doing in his room?转换成同义句：What is he _ _ _in his room?