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ctvloga307
2 năm trước
Trong một đội văn nghệ có 8 bạn nam và 6 bạn nữ .Hỏi có bao nhiêu cách chọn một đội song ca nam và nữ Làm theo lp 11
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Glass isn’t new. People were making glass bowls and bottles more .....than ....5,000 years ago, actually. But no one (1) .................ever found out who made glass first, or when and where that (2) ............... One story tells (3) ................that some men from a ship arrived on a beach and decided to make a meal. They made a fire on the sand and (4) ..................some small rocks in the middle of the fire to cook on. The fire burned (5) .................a very long time and the rocks got really hot. Little pieces of rock began (6) ................with the sand to make glass. So (7) ......................next time you look through a window, look at a mirror (8) .................. you are holding a glass of water, think, ‘Wow! This glass is made from very, very hot sand!’ Example: then than when 1. has have had 2. happen happens happened 3. them us him 4. put puts putting 5. from for off 6. mixed mixing mix 7. the a any 8. or because if

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