Choose the best option A, B, C or D to indicate the underlined part that needs correction in each of the following sentences.
1. Garbage collectors usually START their day EARLY, driving THROUGH residential 
                                                    A                         B                          C                                  
neighbourhoods TO PICK OVER and remove waste. 

                                      D
2. His car WAS BROKEN down WHILE he WAS DRIVING TO work yesterday morning.
                          A                             B                    C              D
3. I am WONDERING how IMPROVING my reading and listening SKILLS in A SHORT TIME?
                     A                             B                                                       C                      D
4. Could you tell me WHAT TO CUT DOWN on the AMOUNT of electricity WE USE every day?
                                     A                 B                             C                                  D
5. The electricity came TO REPAIR the ELECTRICAL WIRES and EQUIPMENTS in our 
                                             A                                     B                            C                           
house AFTER a power outage. 

               D