Make questions for the underlined part

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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( ah chj nào giúp e với ạ T^T )