Chuyển câu trực tiếp sang câu gián tiếp

chuyển câu trực tiếp sang câu gián tiếp
20 " you have to take at least two bottles of water, " tam's father said
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21" I will clean all  the class windows ," said trung 
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22 " help me to hang this picture, ba" said mai
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23" my brother doesn't like eating sticky rice," said linh
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24"we will spend our holiday in da lat next month" said mrs.chi
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25" what does your son want to learn?" the man said to mr.linh
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