Four years ( ）quite a short time; we must study hard.1,is 2,are 3,be 4,were

Four years ( ）quite a short time; we must study hard.1,is 2,are 3,be 4,were four years Four Years my brother left school four years ago（同义句）my brother_______school since four years age. every four years同义词 大致各式有没有four years……（不知道了） The Olympic Games take place （every four years）对every four years提问 four years,over Four Years Old 歌词 four years before four years （ ） gone.中间用have还是has,.. the olympic games takes place every four years(划） Sue is four years old.Gina is four years old,too.(合并一个句子）Sue ( )( )( )( )( )Gina. English难题今天一定要回答短文改错1000 years ago the world's population was very__________little For severalthousand years it grow quite fast________But during the last three or four bueasea years if grew __________very quickly Today it s every four years代表什么 every four years什么意思? The Olympic Games take place every four years.(保持原句意思）The Olympic Games ------ ------ every four year. Wen Qing has been making kits since four years ago(同义句）It is four years ________ Wen Qing _____ to make kites four-year 和four years有什么区别?