Snakey sally slithered stunningly
No, but then most of them are single letters, not words - as claimed in the question.
sentence is the collection of words.
that sentence does not make any sense at all
The words I was bothered to think about that do not have a vowel is 'why', 'sly', 'try' and 'fry'. And 'why' could be a sentence in its own right? Although many would argue against that I believe 'Why?' is a sentence even though it is said that all sentences must have a verb. All these words end in 'y' because 'y' can have the vowel sound 'i' but it is not a vowel.To conclude I would say that there a words and sentence(s) that do not possess a vowel.
The only word you can make with all those letters is the word 'stumps'.
s p a c e s
You can make the word defers using all of the letters.Other words that you can make using some of the letters are:DeersDeferFeedsFreedFreesReedsReefsRefedSederDreeFreeSeedSeer
You can't change present to past without changing words or adding words. Some irregular verb have the same form for past and present eg cut. But unless you add a time word(s) then the sentence is the same. I cut the cake. I cut the cake (last night).
Yes.
8o7898,9789087
using all the letters or not? * less * semi * miss
A few words that can be made from the letter s is:snakesunsonsundaysummersolidstylestealstolestare