But you see I think- in English at least- the literal translation is a bit of a weird concept altogether, and the fact that it is presented as a phrase in the exercise makes me tend to think the usage of the words and phrasing has some subtly different meaning. To say " I don't see the calendar" in this context, would only make any sense at all in the context of - for example- "I don't see the calender... at this moment ...or... from this position". In which situation cannot/can't is completely interchangeable. To make the general sweeping statement "I don't see the calendar.... at all times in all places just makes no sense"..... what never, ever.
I do this something is being "lost in translation" somewhere, as in the previous propositions exercise where statements such as "Oso versa caballo" were repeatedly presented. Where the acknowledged correct translation is "Bear against horse"..... but in English this is meaningless unless you are talking about a fight or a tennis match- for example. Now unless someone has a weird sense of humour and that's what they are referring to where the correct translation would really be "Bear versus horse" (you see the root) then I think they mean something else, like "the bear is next to the horse" or "the bears is leaning on the horse maybe"..
Yeah if you say "I can't see it" it can mean the same as "I don't see it". I'd say using "don't" is more North American, whereas "can't" is more British (I could be very wrong there, but it's simply what I've observed).
All things considered, I would have given the mark/point to "can't" in this scenario.
"I do not see it" could mean you do not know where to look, if something is even there, it is too far away, etc. It has to do with a situation which may be rectifiable.
"I cannot see" has to do with ability. The person could be blind, there could be an obstruction, etc.
cal·en·der [kal-uh n-der]
a machine in which cloth, paper, or the like, is smoothed, glazed, etc., by pressing between rotating cylinders.
a machine for impregnating fabric with rubber, as in the manufacture of automobile tires.
cal·en·dar [kal-uh n-der]
a table or register with the days of each month and week in a year: He marked the date on his calendar.
any of various systems of reckoning time, especially with reference to the beginning, length, and divisions of the year. Compare Chinese calendar, Gregorian calendar, Hindu calendar, Jewish calendar, Julian calendar, Muslim calendar.