Find the underlined part that needs correction in each of the following questions

Find the underlined part that needs correction in each of the following questions.

13. We worked all day and picked up over four tonnes of trashes.

                 A                   B                                       C             D

14. I play basketball with my classmates yesterday. We had so much fun.

          A                       B                                                     C          D

15. People should to call the police if there’s a stranger around their houses.

                     A         B                              C                                   D

16. Volunteers can help take care for and play with the homeless animals.

             A                 B                    C                                    D