There is a fantastic video on youtube that gives so many examples. Basically, you are delaying something or putting it off - like things you meant to do, so you procrastinate if you put things off. Hope that kinda helps.
You use "in" when you mean "in" and you use "or" when you need to use "or". It is rather difficult to construct rules for the use of prepositions in most languages.The grammatical structure of the...
Using " Has " is referred a past tense. Such as: He has taken the garbage out already. Using " Is " for example is referred a Present tense. Such as: He is taking out the garbage.