Choose the underlined word or phrase (A, B, C or D) that needs correcting

Choose the underlined word or phrase (A, B, C or D) that needs correcting.
1. My sister have rights to choose which charity to join.
                     A                       B                    C           D
2. Every month, we collect old book and clothing to aid impoverished mountain children.
                                   A              B               C            D
3. Mark prefers to volunteer because he believes it is benefit and valuable to society.
                 A                                                   B               C                    D
4. The students tutor youngsters from low-income homes to provide them with the necessary knowledge to
                           A                                   B                                                                     C               
obtains a decent job and a good life.
   D
5. I didn't see Jeremy today, but I saw him in Sunday last week.
         A     B                                     C            D


(Bài này dễ nên đúng hết mới được 5đ nha mấy bn:)