khoshtip When we can use of is to do instead of has to do, please? They are nowhere synonymous, I think. To have to do = Is required to do To be to do = To be a future fact that X will do.
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khoshtipWhen we can use of is to do instead of has to do, please?They are nowhere synonymous, I think.
khoshtip something is to do with something elseI see. I think that form is informal for 'has to do with', that is all.