This boy is big. He is a student.
1)when the hotel closes for the winter?
2)where is the post office?
3)how much chairs are in the kitchen?
4)whose homework Jack is doing now?
5)how often you write to each other?
Throughout your life you will meet many people who confirm that they are your friends,but you will make only a few true friends.A true friend will support you even if it hurts his own interest.A true friend will understand your motives and needs and will be with you without any analysis of criticism.A true friend will come forward to help without any request.
В первой части всех предложений неопределенный артикль не требуется,так как это имена собственные. В остальных случаях
1.a
2.a
3.a
4.a
5.a
6.an
7.an
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2 to
3 in, on
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10 on