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How do i can change this sentence : a modern physician in a small town not only is proficient in general medicine but surgery as well. to parallel structure?

What statement best describes the central conflict in this passage from the diary of anne frank? because the franks are jewish and the van daans are not, the franks and the van daans do not get along. because they are jewish, the franks, the van daans, and mr. dussel are in hiding to avoid being discovered by the nazi party. anne does not discuss anything with her mother because she believes that her mother does not understand her. mr. and mrs. van daan argue because mrs. van daan does not think that mr. van daan has the right to sell her fur coat.

What task did the surveyors do? a. they studied the landscape to determine the most direct route for building a road. b. they designed treadmills that lifted blocks of stone to where they were needed. c. they dug trenches and filled them with sand, concrete, and large blocks to form a road.