What will be the tense ?? i ......the garden but couldnot find the spade.the options are 2 dug 2 was going to dig 3 have dug 4 was digging

What will be the tense ?? i ......the garden but couldnot find the spa

1.	What will be the tense ?? i ......the garden but couldnot find the spade.the options are 2 dug 2 was going to dig 3 have dug 4 was digging
Answer» I was GOING to dig the garden but I couldn't find the SPADE