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1) "...........," answered the fairy before he returned into the magic lamp.
OR

"..........," had answered the fairy before he returned into the magic lamp.

2) Shortly before the ten munites were over, he wanted to enjoy a look...
OR

Shortly before the ten munites were over, he had wanted to enjoy a look...

3)
can we use "liar" as an adjective and say: "a liar boy"

4)
"the wolves ran away while I was crying for help"
He told them that the wolves had ran away while he was crying for help
OR

He told them that the wolves had ran away while he had been crying for help