1.My friend did his homework last night.（变为一般疑问句并作否定回答）
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2.You had a cold.（变为一般疑问句并肯定回答）
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3.And ,we,hungry were,thirsty,then,and,（连词成句）
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4.Sam ,Oh,a bike,yesterday,and,I,for,ride,went.for.（连词成句）
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5.My cousin is from Shanghai. （对划线部分提问）
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6.Did you help Mum do the housework （肯定、否定回答）
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7.Dad watched TV Last night（昨晚） （变为一般疑问句的形式）