One of the four underlined parts marked A, B, C, D in each sentence is not correct in standard English. Identify them

Ex5.  One of the four underlined parts marked A, B, C, D in each sentence is not correct in standard English. Identify them.

1.      If Lucia had been here now, she would find out the truth about her uncle’s accident.

             A                                      B                                C                D

2.      If a student takes a course on Computer Science, it will take him four years doing the course.

      A                          B                                                            C                              D

3.      Unless it did not rain, Peter would pay us a visit.

          A                 B                         C                D

4.      If had I known you were in financial difficulty, I would have helped you.

                 A                    B    C                                                 D

5.      If I had knew the time when the match started, I would have told you.

      A          B                        C                                                 D

6.      If she had finished the work, she can go home.

                        A             B                      C    D

7.      If I had spoken more confident at the interview, they would have offered me the job.

                   A                        B                                                           C                    D

8.      If we had had a map, we would not be lost yesterday.

      A           B                              C            D