Find and correct the mistakes

 III  Find and correct the mistakes.

      1.   We didn’t used to have a colorful TV, but we do now.                        ..........................

                     A         B        C                                         D

      2.   When my baby sister is younger, she didn’t use to eat pizza.               ..........................

                                               A     B                         C         D

      3.   It’s about 500 meters at my house to school.                                        ..........................

                  A                  B     C                  D

      4.   Did he use to crying all night when his father died.                             ..........................