-My son are five years old,and I want to buy him some books,

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-My son are five years old,and I want to buy him some books,please.-OK.These books are _____kids.
-My son are five years old,and I want to buy him some books,please.
-OK.These books are _____kids.
用适当的介词填空,补全句子

for
有不明白的地方再问哟,祝你学习进步,更上一层楼! (*^__^*)
再问：为什么不是about？be动词后面可以加for的吗？谢谢
再答： about表示关于，意思是，这些书是关于孩子的书，不太合适，for表示适合，为了的意思 be后面可以加介词的 eg：You expect that the advice will be in your best interest. 你期望这个建议将会对你产生最好的影响。

My shoes are too old.I want to buy some new_____. The chairs are too old.I want to buy some new() I want to buy some books this afternoon的问句 i want to buy some books 改同义句 I want to buy some books.的汉语意思? I want to buy some books的问句 the books are very（h什么） and i want to buy Mum,my trousers are old.I want to buy a new ____. Dad,my jeans are old.I want to buy a new__ My trousers are too old .I want to buy a new__ My trousers are old .I want to buy a new_____怎么做空内单词p打头 Dad,my trousers are old.I want to buy a new______. A trouser