Let us not tire of a good work, hard though it be and wearisome; think of the many little hearts that in their sorrow look to us for help. Discuss

Definition: (adjective) Having concealed difficulty.
Synonyms: tricky.
Usage: Despite Ms. Brown's assurances to the contrary, her exam was surprisingly catchy, and many students received a failing grade.
Discuss

With seven buildings and a shopping concourse, the World Trade Center in lower Manhattan was the largest commercial complex in the world before it was destroyed in the September 11, 2001, terrorist attacks. Its most prominent structures were the 110-story rectangular Twin Towers, which, at more than 1,360 ft (415 m) tall, were the tallest buildings in the world until the Sears Tower surpassed them in 1974. How did the construction of the complex lead to the expansion of the island of Manhattan? Discuss