1. As much as Jane loved Tom then, she was fed up with his behaviour. (I am only guessing at this one, because the first part is confusing) 2. Search as they would, they could find nobody in the house. (Good.) 3. As much as Jack is indebted to the company, he also has to protect his own reputation. (Good.) 4. To get him to campaign as I intend as much as he can, he refused to do so. (I can't quite understand the first part) Question: Which is/are grammatically correct? Could you tell me how to correct the grammatically incorrect sentences? Thank you.