do as directed
1. Although he had a good salary,he ws unhappy in his job
$\to \mathrm{In} \mathrm{spite} \mathrm{of}$
2. He gets up early in the morning and he used to it
$\to \mathrm{He} \mathrm{is} \mathrm{used} \mathrm{to}$
3. ​ He doesn't study hart so he will fail the final exam next month
$\to \mathrm{If}$