In addition to painting highly acclaimed portraits,Mary Cassatt was__to several major art collectors A to advise B an aviser C advised D advising
-这题偶选D,前后两个动词平行对称。
B为什么不可以选呢?
In 1784,the leaders of what would later become the state of Virginia gave up__to the territory that later became five different Midwestern states. A any claim B when the claim C to claim D would claim