, you should keep it a secret; or you will ruin our plan.

A. If askingB. If asked

C. If to askD. If being asking

 

B

【解析】選B。連詞接分詞相當(dāng)于狀語(yǔ)從句, 此句相當(dāng)于If you were asked. . . 。

 

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