A:who is singing in the classroomB:It must be susan A she B it C this d he为什么选B

who is singing in the next room 为什么who 后面要跟 is singing? listen,who is singing in the classroom?变成 are Listen!Who is singing in the next room?这里为什么要用singing Listen!Who ____?A.singing B.is sing C.is singing 为什么不可以选Bthe girl （ ） an English song in next room is Toms sisterA who is singing B is singing C sang D was singing知道答案是A 但 B 错在哪 -Who is singing in the next room.-_ must be Marie A.It B.She C.This D.There who is 什么than you at singing in your family.a,good,b,well,c,veryd,rather Who is _____than you at singing in your famliy?选择A.good B.well C.better D.best Who is going to____the singing contest tomorrow?有选择的:A.joinB.take part onC.takeD.take part in Who is singing in the classroom A SheB ItCThisD He为什么选B,而不选其他的答案? who over there now A,who over there now A,singing B,sing C,is singing 请问,问号选什么? Someone is singing in next room.Please go and see who it is.为什么是 who it is A:who is singing in the classroomB:It must be susan A she B it C this d he为什么选B 2.Listen!Someone ____ in the next room.A.sing B.singing C.is singing D.are singing Listen!She in the classroom.A.sing B.sings C.singing D.is singing 为什么 Listen!A girl____in the classroomA.sing B.singing C.in singing D.is sing Everyone that I know who is like studying and singing in High School.请问这句哪错了 Who is singing in the classroom?I want to know合为一句