Be quick!They've been waiting for us for ____ hour and ___half.A.an,a B.a,an C.a,/ D./,a

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Bequick!They''vebeenwaitingforusfor____hourand___half.A.an,aB.a,anC.a,/D./,aBequick!They''vebeenwaitin

Be quick!They've been waiting for us for ____ hour and ___half.A.an,a B.a,an C.a,/ D./,a
Be quick!They've been waiting for us for ____ hour and ___half.A.an,a B.a,an C.a,/ D./,a

Be quick!They've been waiting for us for ____ hour and ___half.A.an,a B.a,an C.a,/ D./,a
A
前面冠词的选择是根据音标来的.发音为AEIOU的五个元音用an,其他用a
这儿hour的音标里第一个音是o,因此用an,而half第一个音标是h,因此用a
hour是比较特殊的一个词,记住就好了

A.an,a

A

A

A