[Q]: Here's a question: The engineer put the new invention on the table in front of his bosses, he turned on his microphone and began his what of the product?  Here are possible answers to this question: - stage - demonstration - record sound - parade - conference  I believe the correct choice is "demonstration", here's why:
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[A]: need for computer corpora


[Q]: Here's a question: Where is homemade food often stored?  Here are possible answers to this question: - supermarket - jar - backpack - wal-mart - container  I believe the correct choice is "jar", here's why:
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[A]: definitely best place to store


[Q]: Here's a question: Where can you store a small notepad on your person?  Here are possible answers to this question: - back pocket - meeting - drug store - home - school  I believe the correct choice is "back pocket", here's why:
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[A]: notepads can fit in pockets


[Q]: Here's a question: What problems do children have learning about the world?  Here are possible answers to this question: - confusion - anger - sadness - loss of innocence - frustration  I believe the correct choice is "confusion", here's why:
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[A]:
children have learning about the world confusion.