Well, the sentences that have five syllables (2,4,6,9) must be C, as this is the only stress pattern with five syllables, although I'd say that #9 should have a different stress pattern than what C is. I can understand your difficulty on these, if you're just learning English, as stressing different syllables can actually make the sentence mean different things, what is often referred to as "inflection". I've given you what I believe to be correct for each sentence below, but I still encourage you to read each sentence aloud with the different stress pattern options to see how each one sounds, and make your own choices.
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