Rearrange the words to make correct sentences

Rearrange the words to make correct sentences.
5. 3D printer/ can/ print/ of/ cool/ a/ things/ lots/ You/ with/.
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6. Many/ Sydney Opera House/ performances/ go/ people/ watch/ musical/ to/ to/.
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Make a suitable question for the underlined part in each sentence.
7. You should visit Ha Giang province in February.
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8. I think people will live under the sea in the future.
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9. We can go hiking and rafting there.
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