Find a mistake in each sentence and correct it

. Find a mistake in each sentence and correct it.
76. He asked me if where I lived in the city .
             A               B                    C   D
77.If it rained tomorrow , we will not go for a pinic .
     A       B                                            C   D
78. Tuan advised him to not lend her any more money.
                  A                 B              C        D
79. What aspect of learning English do you find more difficult ?
                 A              B                                    C    D
80. The students ought to learn their lessons careful before the exams.
                                       A                   B         C                      D