1. She drinks orange juice every day.      -> Orange juice is drunk every day.
2. She reads a story book in her room after dinner.     -> A story book is read in her room after dinner.
3. They clean the house twice a day.    -> The house is cleaned twice a day.
4. People speak English as the second language in Singapore.     -> English is spoken as the second language in Singapore.
5. Pollution affects the environment in many ways.     -> The environment is affected in many ways.

a; S
b; S
c; Đ
d; Đ