I. Make questions for the underlined part:

1.There are 40 students in my classroom.
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2. My brother is studying in his bedroom.
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3. My family usually goes to Da Lat on summer vacation.
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4. Her children often go to the club by bike.
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5. My favorite singer is David Archuleta.
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6. The show lasts two hours and a half.
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( ai giúp e với ajT^T)