Question: cook until cheese is melted and slice each into 4 pieces.
Answer: --> Cook until cheese is melted and slice each into 4 pieces.

Question: reservations can only be made in legoland at the seat traffic school, which is located in a corner of miniland. reservations can only be made for the day of your visit.
Answer: --> Reservations can only be made in LEGOLAND at the SEAT Traffic School, which is located in a corner of Miniland. Reservations can only be made for the day of your visit.

Question: it is, i think, good to read one's ms. aloud.
Answer:
--> It is, I think, good to read one's MS. aloud.