在英语语法中，被动语态是一种非常重要的表达方式，它用来强调动作的承受者而不是执行者。被动语态通常由“be动词”加上过去分词构成。为了帮助大家更好地掌握被动语态的使用，下面是一些练习题供参考。
1. The book ______ (write) by him last year.
A. was written
B. is written
C. has been written
D. will be written
2. A new bridge ______ (build) across the river next year.
A. will build
B. is built
C. will be built
D. builds
3. Many trees ______ (plant) in our school every year.
A. plant
B. planted
C. are planted
D. were planted
4. The window ______ (break) by a stone yesterday.
A. breaks
B. is broken
C. was broken
D. broke
5. English ______ (speak) all over the world.
A. speaks
B. is spoken
C. spoke
D. was spoken
6. The classroom ______ (clean) every day.
A. cleans
B. is cleaned
C. cleaned
D. was cleaned
7. This song ______ (sing) many times since 2010.
A. sings
B. sang
C. has been sung
D. had been sung
8. A lot of money ______ (save) for the poor children.
A. save
B. saved
C. are saved
D. has been saved
9. The letter ______ (post) two days ago.
A. posts
B. posted
C. was posted
D. is posted
10. The machine ______ (repair) at this moment.
A. repairs
B. is repairing
C. is being repaired
D. was repaired
以上就是一些关于被动语态的基础练习题。希望大家通过这些题目能够更加熟练地运用被动语态。记住，在使用被动语态时，一定要注意时态和主谓一致的问题。