因為珊迪去度假，海綿寶寶和派大星負責照顧她的寵物毛毛蟲。當毛毛蟲一夜之間變成蝴蝶後，海綿寶寶和派大星嚇壞了。毛毛蟲到哪裡去了？他們可以從蝴蝶怪物手中逃脫嗎？
Extensive reading is essential for improving fluency and there is a real need in the ELT classroom for contemporary, low-level reading material for younger learners. The Spongebob Squarepants TV series is popular with children all over the world for its memorable characters and quirky storylines.
Sandy goes on holiday and leaves SpongeBob and Patrick in charge of her pet caterpillar, Wormy. When Wormy turns into a butterfly overnight, SpongeBob and Patrick are terrified! Where is their good friend Wormy? And can they escape the evil butterfly monster?

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