_________! The music_________ so nice.
I like to travel on high-speed trains because they are usually . While planes are behind schedule (晚点) too often.
----What a nice bike! How long ____ you ____it? ----- Just two weeks.
When his wife died, he lived ______; his lovely pet dog made him feel less ______.
All the students know shouting at the elderly is impolite.
We can’t work out this problem. Can you tell us ______ ?