Question

he just spat on the ground and _____ digging.​

Answer 1

start is the prior word fir its

Answer 2

Answer:

He just spat on the ground and started digging.

The sentence is lacking  verve and no sentence will ever be complete without a verve. We are assuming that a person who just spat on the ground, stooped and started digging. Albeit the reason was unknown as to why someone will do this silly act.