The behavior suggest that: He is willing to do anything to achieve his goals.
Gareth realized that someone with a background like him is almost impossible to enter knighthood.
He took the job because he wanted to get Close to King Arthur and he eventually notices Gareth Value and potential.
No it is not, it should be : Marie has stolen my heart. Hope this helps! : )
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You can't make them. They're coordinating conjunctions. For, And, Nor, But, Or, Yet, and So
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c. costs costing a lot nowadays