He wants to buy a (pair) of trousers为什么要选pair

he wants to buy himself a book.(同义句)he wants to ___ ____ ____ ___himself. he wants to buy himself a book.（同意句） he wants to buy a bike同义句, he wants to buy a new football.改否定句 He wants to buy a (b )of rice. He wants to buy a pair of leather shoes.同义句 He _____ _____ _____ buy a pair of shoes He wants to buy a scarf so that he will look more handsome 改为同义句 He wants to buy a CD,but he doesn’t have e money（怎么填空） he wants to buy a new pairHis trousers are worn out.He wants to buy a new __A.one B.pair C.trousers He wants to buy some food ( ）the money.A:with B:for C:to He wants to buy a bottle of orange juice （改为复数句） He wants to buy a bottle of orange juice这句话改成复数形式. He wants to buy a book 怎么变否定句?要快 He wants to buy a pair of rubber boots.这个怎么改成同义句啊?急用! He wants to buy a (pair) of trousers为什么要选pair He wants his mother to buy a bicycle for him.的同义句 请问,He wants to buy a birthday cake for her的同义句是什么? Dale () the waiter he wants to buy a nice hat for his mother