1.Because people have so much___,many stores offer advice about what they shold eat.a.to chooseb.to be chosenc.to choose fromd.choosing from 我选的是B

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选c,句子的意思是从什么中选择,应该是choose from sth.,to choose from是不定式做后置定语,修饰so much(根据句子意思这个so much=so much food) be chosen的意思是选定选中,没有从中的意思