________ are they They are at work.填什么单词呢?

they are ________ (twin) sister. they are ________ (twin) sisters. what are those they are ________. They are good for me.改为否定句They are ________ ________ me. Platypus and koala are also rare animals.They are ________ 填上适当单词：_______cherries are those?They are ________. They are twins.They are both (bear) on February 25th. They are chatting with other.（对划线部分提问） 　　_______ ________ they ________ they are students of(grade7 Grade7they are students of(grade7 Grade7 7th grade Grade 7th) 根据所给汉语完成句子：他们正在谈论篮球.They are ________ ________ basketball.他们正在谈论篮球.They are ________ ________ basketball. They are reading about an English boy ________ the newspaper 25. They are talking ________ the telephone .填介词 Young people should go ________ they are most need they are on ________,for only fifteen dollars. ________ are they They are at work.填什么单词呢? They are very busy.They are study ________ exams.填介词 they are comedies.（改为单数句）______ ______ ________ ________. They are from Australia and they ________ English.A.say B.talk C.speak D.tell