Choose the best answer.

If a machine stops moving or working normally, you can say that it has ______ .

Find the mistake.

Perhaps the most distinctive features of insects and undoubtedly one of the most important reasons for their success is their quite well-developed sensory system.

Choose the best answer.

In 1791, Pierre-Charles L' Enfant ________ plan for the new capital city at Washington.

Choose the best answer.

You may find doing this job very _______. Try it!

Choose the best answer.

Two students are taking in a new class.

Student 1: “Excuse me, is anybody sitting here?”

Student 2: “_______”

Choose the best answer.

Turn off this machine, please. The harsh sound really _______ me crazy.

Choose the word CLOSEST in meaning to the underlined part.

The architect was let down that his new city plan had been turned down.