22. I felt ...... disappointed because of their bad behavior.
=> $C$ . Really ( Adv+adj )
23. You have to listen to your teacher ............
=> $C$ . attentively ( Có listen (V) nên ta dùng adv )
24. If people drive their cars .........................., they won’t get hurt themselves and others.
=> $B$. carefully ( Có (v) là drive nên ta dùng carefully là ( adv ) )
25. If she .......... enough money, she’ll buy her son a motorbike.
=> $C$ . Earns ( Vì vế sau là She'll => thì hiện tại đơn mà danhtừ số ít => thêm s )
@@@học tốt nhé !