_________then what I know today, I would have saved myself ...

[ Grammar ]

_________then what I know today, I would have saved myself a lot of time and trouble over the years.

A. had I known

B. did I know

C. If I know

D. If I would know

Select your answer:

Random Topics:
Finite and Non-Finite Verb Verb Phrases Adverbial Clause of Cause and Effect Preposition of Place Adjectives with Preposition Modal Verbs & Reflexive Pronouns Past Participles Miscellaneous Grammar Usages Must or Mus not

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A. Where

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