1. After Mrs. Wang had returned to her house from work, she

                                            A              B                  C   

was cooking dinner.

         D

2. Jimmy threw the ball high in the air, and Betty catching it when it came down.

                   A                   B                                         C              D

3. Linda has worn her new yellow dress only once since she buys it.

                        A                  B                         C                         D

4. Last week Mark told me that he got very bored with his present job

                                A                       B

and is looking for a new one.

            C                        D

5. Having fed the dog, he was sat down to his own meal.

             A                              B                C         D