What is the difference between these two sentences? For some reason, maybe due to the influence of my mother tongue, I tend to use 'must' in such situations.
1a. What would have been their main source of employment?
What is the difference between these two sentences? For some reason, maybe due to the influence of my mother tongue, I tend to use 'must' in such situations.
1a. What would have been their main source of employment?