Student or Learner
Are the following sentences natural to a native ear?
1. How soon do you expect to have this project started?
2. How long do you think you will be able to remain without incurring any taxes?
3. Why were these business units had to be in country A and not in country B?
The first two are fine.
weredid these business units hadhave to be in country A and not in country B?
I prefer 'rather than in' to 'and not in'.