Sniffled and coughed.
Incomplete. No subject!
The dinosaur let out a ferocious roar!
Complete! Subject-- "dinosaur" Verb-- "let out"
He thought.
Complete! Subject-- "he" Verb--"thought"
The sharp and spiky cactus.
Incomplete. No verb!
Ran so fast!
incomplete. No subject!
His lunch plummeted to the ground.
Complete! Subject--"his lunch" Verb-- "plummeted"
Her very angry dog.
Incomplete. No verb.
He looked at the girl.
Complete! Subject--"he" Verb--"looked"
Glistened and glimmered in the sun.
Incomplete. No subject!
His toe was massive!
Complete! Subject-- "toe" Verb--"was"
The crocodile laughed with glistening sharp teeth.
Complete! Subject-- "crocodile" Verb-- "laughed"
The cuddly and clever kitty cat.
Incomplete. No verb!
She shouted.
Complete! Subject--"she" Verb-- "shouted"
Floated away.
Incomplete. No subject.
Jumping up and down all around the house.
Incomplete -- no subject
She will.
Complete. Subject--"She" Verb--"will"