Hello native English speakers. Thank you in advance. Queries about the grammatical correctness and meaning of three real sentences. 1a. She was too experienced a conductor to be worried by what Tom said. 1b. She was too experienced a conductor for what Tom said to worry. Are both grammatically correct and having the same meaning? 2a. We took him for our model for the very reason that he ought to have admitted his example. ​ 2b. We took him for our model for the very reason for which he ought to have admitted his example. ​ 2c. We took him for our model for the very reason which/that he ought to have admitted his example for. 2d. We took him for our model for the very reason he ought to have admitted his example. ​ 2e. We took him for our model for the very reason why he ought to have admitted his example. ​ Do they have the same meaning? Are they all grammatically correct? and workable? 3a. I was getting ready to leave on the very day that he came. 3b. I was getting ready to leave on the very day he came. 3c. I was getting ready to leave on the very day when he came. 3d. I was getting ready to leave on the very day on which he came. 3e. I was getting ready to leave on the very day which he came on. Which is grammatically correct? Do they have the same meaning?