Find and correct the mistakes in each sentence.
13. I should to obey the rules in the cinema by turning off your mobile phone.
ABCD
14. Because there was an accident, everyone was fine.
A BC D
15 .Despite the weather was bad, we had a good time.
A BCD
16.She got the highest score in her class although her illness.
A BC D
17.He didn’t used to be a doctor, he used to be a manager of a computer company.
ABCD