how often are the Olympic Games held.里的game为什么要加s,hold为什么要用过去式?)

— stop are there to the airport?there A.how long B.how soon C.how often D.how many __ stops are there to the park?A how often B how many C how long D how much - Could you tell me_______?- Every four years.A.how often the Olympic Games take place B.when the Olympic Games are heldC.how often are the Olympic Games heldD.how often the Olympic Games were held为什么不选D? How often are the Olympic Games held?How often are the Olympic Games held?（ ）four years A Each B Every C In D For可how often不是对频率提问的么,求详解 How often _____ you water the trees?A.are B.do C.does visitors are often amazed to discover how much the city has changedshenm什么意思 Our friends often comment on how different the two boys are请帮忙翻译 — stop are there to the airport?there A.how long B.how soon C.how often D.how many是three How are the ham? —How wonderfully you are playing the piano!—Twice.Practice makes perfect.how often 和how many time 哪个对 How often does Candy brush the teeth How often is the World Expo held? How often is the Olypic Gams held? How often should we pulish the paper? often do you 和how often are you的区别?什么时候用how often do you 什么时候用how often are you? how often are the Olympic Games held.里的game为什么要加s,hold为什么要用过去式?) it's often the children who are selfish and don't appreciate how much their parents have done for how （ ）letters are there in the shortest word in BOOK A much B often C LONG D many