your father is at a meeting为什么要加at和用ing形式啊

your father is at here your father is at a meeting your father ___ ____a meeting Is your father good at drawing? your father is at a meeting为什么要加at和用ing形式啊 --____ your father at home?--No,he's ____ a factory.A.Is; in B.Does; in C.Is; on Is this a photo your father? Is your father a doctor?怎么回答? Your father is a young 修改错误 Is this a photo your father? Is your father good at fishing 同义句--------your father -------- -------- --------- fishing? is your father at home?(作否定回答） -Is your father good at()?-No he isn't. My father is a worker ; ____is your father ? Is your father home?No,he is working late _____ the office.A.on B.at C.of D.to What is your father doing He's is talking ( ) an old man A at B to C in where is your father,jenny?he is walking ____the road with my grandpa.A .at B.alongC.inD.from My father is a doctor.What's your father?(改为同义句) My father is a doctor.()()your father? Is your father good at ( )toy trains?A.making B.to make C.makes D.A and B