the first （second ）conditional clause条件句怎么还有 first second之分呢?

the first （second ）conditional clause条件句怎么还有 first second之分呢? Mr Zhang asked me ————question before i could answer————.A the second； the first B a second； a first C a second ,the first D the second； a first为什么选C the second first time Rt It's _____day of school.A.the first B.first C.one D.second Our school is[ ]middle school in our cityA.the second big B.the first big C.the second biggest D.the first biggest选什么 He was made to clean the room ___timeA.the second B.the first c.a second D.second选哪个?为什么?句子意思是? 英语作文能用the first the second The second place is the first loser The second winner means the first loser The second is the first loser from the first stage to the second 请问the first torchbearer of the second Most people in the USA speak Englishe as ___language.A.a second B.the first C.the second D.a first It's the ___ day of the lunar year.(A.last B.second C.first) “E” is the ____letter of the English alphabet A、five B、first C、fifth D、second The ____ letter in the word ''cinema'' is '' I '' A .first B .second C .fourth the ___month of the year is february.A:one B:first C:two D:second He was asked time to hand in his dictation.A、the second B、a first C、the first D、a second该选哪个答案,为什么呢?