句型转换。
【小题1】Some men are singing.(变成单数)
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【小题2】I am riding my bike now. (对划线部分提问)
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【小题3】We are sweeping the floor. (变为否定句)
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【小题4】Tom is sad. (变为否定句)
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【小题5】The boy is crying. (变一般疑问句)
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Amy watched TV last night.（对画线部分提问）
_______ _______ Amy do last night?

My school starts at 8 o’clock.（对画线部分提问）
______ ______does your school start?

It's an invitation to Mary's birthday party.（对画线部分提问）
______ is ______?

Tom puts his shoes in the box.（对画线部分提问）
______ ______Tom put in the box?