The factory director made a promise I solve the problem within half a day he would give me a large sum of reward.. A.when B.if C.if that D.that if 查看更多

 

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The factory director made a promise ________ I solve the problem within half a day he would give me a large sum of reward.


  1. A.
    when
  2. B.
    if
  3. C.
    if that
  4. D.
    that if

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The factory director made a promise ________ I solve the problem within half a day he would give me a large sum of reward.

[  ]

A.when

B.if

C.if that

D.that if

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