Once ____,this power station will supply all the neighboring towns and villages with electricityA.it being completed B,it completed C.completed D.it completing为什么选C而不选B呢?

Once ____,this power station will supply all the neighboring towns and villages with electricityA.it being completed B,it completed C.completed D.it completing为什么选C而不选B呢? 英语翻译this is ____ you dialed is power off pls redial later just this once no once you understand this rule,you'll have no further difficuty.同义句____ ____ ____you understand this rule,you'll have no further difficuty ____(find)this,Mrs.Brown rushed to telephone the police at once.填空并解释,在句子中的成分 为什么 China is a ____(power)country Once,this is a promise This is ____ ____ ____ They went to Beijing to stay there for a short time.（同义句） They went to Beijing ____ ____ ____ 顺便说下这2题I went to Hainan once last year.（划线部分提问,划线处once） ____ ____ ____ ____ you go to Hainan last year?This mean once ----,this power station will supply all the neighboring towns and villages with electricity.A.it being completed B,it completed C.it was completed D.it completing为什么选B而不选A呢? Once _______, this power station will supply all the neighboring towns and villages with electricity. A. it being completed B. it completed C. completed D. it completes说明原因 英语选择题let's settle this matterLet's settle this matter____A.once and for allB.once for allC.once allD.once at all我选的是B,请说明错误原因和正确答案理由.Smoking is so harmful to personal health that it kills ____ people each Mary is very young ,but she knows a lot____Mary is very young,she knows a lot2.Why don't we go hiking this weekend?__ ___go hiking this weekend?3.Li Ming watches TV once or twice a week.对once or twice 提问____ ____ ____ ____ Li Ming watch TV a we power power power power power