<p>This one is a bit confusing</p>
<p>Contrasting with most other fifteenth-century rulers, Portuguese kings could count on the support of the aristocracy in any oversease venutures.</p>
<p>The answer is "Contrasting with". Im gonna assume that it has to be In contrast to, but what is wrong with Contrasting with??</p>
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<p>Quick to take advantage of Mealnie Johnson's preoccupation in the history of the Johnson family, the genealogist proposed investigating that history - for a large fee.</p>
<p>Why is "preocuppation in" the wrong answer??? I thought it would be either "that" or No error, and I chose that. </p>
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<p>Growing up in a family where music was a daily part of life, Steve and Rick shared a determination to become singing duos known nationwide.</p>
<p>"to become singing duos" is right but is "of becoming singing duo" gramatically wrong?</p>