1. Everyone was ______ (气恼的，生气的）at the heavy traffic in the city. The roads were always ______ (拥挤的）.
2. She ______ (撕）the letter into pieces and walked out quickly.
3. He lives in a ______ (暖和舒适的）little room.
4. The teacher is ______ (教授)some students in playing the piano.
5. The speaker spent several hours ______ (润色) her lecture.
