which to buy?改写成宾语从句?

改为宾语从句:Tom hasn't decide which backpack to buy. 请将下列语句改为宾语从句：Lucy hasn't decided which trousers to buy. I can't decide which to buy 是宾语从句吗? 将下列句子改写成含有宾语从句的复合句 将下面几个特殊疑问句,改写成宾语从句.1.Where have you been?She wants to know__ Do you know?How does father go to work every day?(改写成宾语从句） 你 为什么英语中定语从句用which to buy,而不是to buy which My father wants to buy that car改成宾语从句 宾语从句 怎么改 怎样改宾语从句? 宾语从句 I don“t which one he will buy 还是I don“t he will buy whi will you go to the cinema tomaorrow 改宾语从句