Directions: The questions here test your knowledge of the grammatical structure of English. Each question consists of a short written conversation, part of which has been omitted. Four words or phrases, labeled 1, 2, 3, and 4, are given below the conversation. You are to choose the word or phrase that will correctly complete the conversation. Click the answer button to see the correct answer. If you need a hint, press the arrow button next to the hint. Look at the example.