page turner> <Harry potter was my favorite page turner.
icon> The magazine science boy's icon was Sybo
ups and down> What was your ups and down today?
collapsed> The boat collapesed and the people had to swim.
gratefull> You always have to be gratefull.

page turner> Harry Potter was my favorite page turner.
icon> The magazine's science boy icon was Sybo.
ups and down> What was your ups and downs today?
collapsed> The boat collapsed and the people had to swim.
grateful> You always have to be grateful.

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Julie : Harry potter was my favorite page turner.
Correct : Harry Potter was my favorite page turner.
Explanation : Harry Potter is a proper noun that is why 'Potter' should also start in a capital letter.

Julie : The magazine science boy's icon was Sybo
Correct : The magazine's science boy icon was Sybo.
Explanation : The possessive form of the noun is in the 'magazine' because the science boy icon is in the magazine. And also, don't forget to put a period after your sentence. ☺

Julie : What was your ups and down today?
Correct : What was your ups and downs today?
Explanation : You just forgot to put an 's' here. ☺

Julie : The boat collapesed and the people had to swim.
Correct : The boat collapsed and the people had to swim.

Julie : gratefull> You always have to be gratefull.
Correct : grateful> You always have to be grateful.

Explanation : You also need to be careful with your spelling as a small confusion in spelling can make your sentence invalid.

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Hi Julie! Wow! I'm amazed. You were able to do your homework fast. Your sentences are very good and you were able to use the words correctly in a sentence. It just shows that you understand what the words mean. Keep it up Julie!
~Teacher Louise