You are.
The two words that make up the contraction "can't" are "cannot."
"who" and "will" make up the contraction "who'll."
It will.
"you" and "would" make up the contraction "you'd."
"You" and "would" make up the contraction "you'd".
It is
will + not
Does not.
"Weren't" is a contraction. It is composed of the words "were" and "not".
"Let us" combine to form the contraction "let's".
'Would've' is a contraction of ' would have'.
Won't is a contraction of will not.