Complete the second sentence so that it has similar meaning to the first sentence.
1.Students are more aware of protecting the environment. Teachers teach environmental issues at school.
If …………………………………………………………………………………………………
2.People speak English all over the world.
=>English ……………………………………………………………………………………..
3.Many rivers and lakes are poisoned.Factories produce waste and pour it into rivers and lakes.
Because ………………………………………………………………………………………….
4.They provided food then cleared up the debris.
=>After they………………………………………….
5. Vietnamese students are obligated to wear uniforms when they go to school. (HAVE)
___________________________________________________________
6. You are not allowed to use your mobile phone on the plane. (MUSTN’T)
7. People recycle old car tires to make shoes and sandals.
Old car tires ____________________________________________________
8. Keeping the environment clean is very important.
It’s ____________________________________________________________