there is ( ）knocking at the door.GO and see who it is A nobody B somebody C anybody D everybody及选项的作用

There is someone knocking at the door.为什么用“knocking”,要加“ing”? Someone is knocking on the door （同意句）改成There is ___ ____ ___ the door 一道英语填词题There is someone knocking at the door.Please go and see who （ ）（是谁） Do not make any noise .There is someone knocking at the door .（改成同义句）（）（）.There is （）（） on the door. there is ( ）knocking at the door.GO and see who it is A nobody B somebody C anybody D everybody及选项的作用 Someone is knocking at the door.同义句改写：There is ___ ___ at the door. There is somebody knocking at the door .Go to see( ) it is. Listen!_______(有人）is knocking at the door. There is someone knocking at the door.It may ________ (be) the postman.如题 There is__(nobody,somebody.anybody,everybody)knocking at the door,Go and see who it is 6.There is someone knocking at the door,who _____ it be?A.can B.may C.must D.need Listen,l hear someone knocking at the door的同义句 Listen!There is ()() at the door Listen ,There are some children knocking ()Mrs Brown is door.a:with,b:to,c:at,d:off. 根据汉语意思完成句子：（ ）（有人）is knocking at the door. someone is knocking at the door.It might be the posyman.为什么用is knocking 为什么是is knocking：Who is knocking(knock) at the door?it's me. 一道同义句转换题,1.Listen!I hear someone knocking at the door.转换 ：Listen!There is _____ _____ at the door. Someone is knocking at the door.____ is it?