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        1. When ___you _____ your breakfast this morning? At 6.00.
          A.have, hadB.did, haveC.a(chǎn)re, have D.has, had
          B
          因?yàn)閔ave是行為動(dòng)詞,變成一般疑問(wèn)句時(shí),要借助于助動(dòng)詞do/does/did,故選B
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