MCQOPTIONS
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				| 1. | 
                                    Fill in the blanks withcorrect form of verb. I _________ (try) to change the bulb that had burnt out. | 
                            
| A. | Tried | 
| B. | Trying | 
| C. | Was trying | 
| D. | All of these | 
| E. | None of these | 
| Answer» D. All of these | |