No, the proper way would be: Swim quickly.
"She did not have" is the proper grammar.
=How fast does a squid swim?==they can swim really fast=
Tiger it can swim. It works, but still poor grammar. ' The tiger ; it can swim. ' is more correct. Better alternatives is: ' the tiger can swim '
It is proper grammar to say, "I bet you".
"Don't it" is not proper grammar. The correct form is "doesn't it".
A penguin can swim as fast as a seal
no, that is definitely not proper grammar.
Dolphin swim fast so they can catch there prey
it can swim as fast as a jet
No, it is not proper grammar. The correct phrasing is "you and I."
swim well
he can swim just as fast as any other penguin so not very fast then