小测验：选择正确的单词

1. The kettle is singing.
   水壶里水响了。
2. He 'll sing to the accompaniment of the piano .
   他将由钢琴伴唱。
3. He sang to a piano accompaniment.
   他演唱由钢琴伴奏.
4. They sang the shopkeeper down.
   他们迫使老板降价。
5. Now you may sing to your heart’s content.
   现在你可以尽情地唱了。

　1个名词解释