..帮个忙指导一下.1.Lucy hasn‘t decided which trousers to buy.（改为复合句

1。Lucy hasn‘t decided which trousers to buy。（改为复合句）Lucy hasn't decided which trousers she should buy。你给的这个第一个句话本身就是which引导的宾语从句,只不过是宾语从句的省略,wh疑问词+ to do 的形式,2。I hope to see you again。（改为复合句）I hope that i can see you again3。从我家骑车到颐和园要用50分钟。It usually __takes____ me 50 minutes ____to__ ___go___ __to____ the Summer Palace by bike from my home。