题目内容

When______you______your breakfast this morning? At 6.00.


  1. A.
    have, had
  2. B.
    did, have
  3. C.
    are, have
  4. D.
    has, had
B
因为have是行为动词,变成一般疑问句时,要借助于助动词do/does/did,故选B
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