1. is leaned by them every afternoon. --> câu bị động

2. took a photo --> Công thức: Would you mind if + S + V2/ed

3. are washed with a detergent liquid by them --> câu bị động

4. is learned all over the world --> câu bị động

5. dangerous to go out at night --> Công thức: It + be + adj + to V-nguyên mẫu

1. They clean our school yard every afternoon
=》  Our school yard is cleaned every afternoon
2 . Do you mind if i take a photo?
=》 Would you mind if i took a photo?(câu này lúc đầu sai sorry)
3.  They wash the glass pieces with a detergent liquid
=》The glass pieces are washed with a dertergent liquid
4. People learn English all over the world
=》English is learnt all over the world
5. Going out at night is dangerous
=》 It's dangerous to go out at night