We should decide what to buy ______(one)

We should decide what to buy _____(one). i can't decide which one l should buy 同义句改写 we must decide what to buy before going sh 补充 Now we have one hundred yuan in all.what should we buy ( No one told us what we should to do I can't decide to buy which one, well,I can't decide which one to buy. I can't decide which one to buy 为什么不可以to buy which one We can't decide which one ______(choose) what do we -----to buy?we---to--- 1.I can't decide which one to buy能不能变成I can‘t decide to buy Jim,I have no idea about which ______ to buy.What should I d