1. She is proud of her mother, who is a ________ (清洁工)．
答案：cleaner
2. When she got up from the table, it was obviously the ________ (信号) for us to leave.
答案：signal
3. The blacks in America have been fighting for their ________ (自由) since the 1860s.
答案：freedom
4. Be careful with the ________ (水壶) full of boiled water on the gas oven.
答案：kettle
5. The website provides a p________ guide to buying and selling a house.
答案：practical
6. Poetry always loses something in t________.
答案：translation
