Complete sentences

gấp ạ:(
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Practice 3
Compiete sentences
1. what / happen / our life / modern transport / not exist?
2. the third world war / break / life / earth! destroy
3. you can invent / engine that can run / water / you / become / millionaire
4. everyone can fly / how we can / control / traffic?
5. my brother / start school this year / he / 2 years older
6. he / travel / plane / he / not afraid / heights
7. some coastal cities / disappear / there be / sudden increase / temperature
8. people / understand each other/better /language barrier / remove