Why does your mother want to buy you a new bike?_____because

Why does your mother want to buy you a new bike?_____because -Mother ,you promised to buy a new bike. ______do you want to buy a new mountain bike? I want to buy a new bike,and my mother will a__ to give me s Do you want to buy your son a bike?(同义句替换） My bike is stolen.I want to buy a new one(为什么不能用bike) Does your mother go to work by bike or on foot I want to kno want to buy a new 句型转换I want to buy her a new bike .(改为同义句）I want to buy _____ ()you buy me a new bike?Mum? He wants to buy a new bike Mother promised to buy me a new bike ;she didn't ,_______