there are five pairs___,but I'm at a loss which to buy.为什么不能用for choosing,我看过有回答说for choosing表示状态,但为什么表示状态的不能选呢?

there are five pairs __________There are five pairs __________,but I am at a loss which to buy.可以填for choosing吗,为什么?choose from. there are five pairs (to choose from)为什么不是to be chosen from?tochoose there are five pairs to choose from,but i am at a loss which to buy 意思 There are five pairs of shoes___________ (choose) fromchoose 为什么 请大侠帮我分析一下句子的成分 There are thirty-five The socks are so c()that I buy five pairs There are five pairs ( ),but l am at a loss which to buy.A.to be chosenB.to choose fromC.to chooseD.for choosing 关于非谓语的练习题,希望能给出分析过程 1.there are five pairs ___,but i'm at a lost which to buy.a. There are five pairs of shoes_____,but i'm at loss which to buy.A.to choose from B.for choosing 为什么选A不选B? There are five pairs of shoes ___ ___ ___ (choose) (请用正确的介词与所给出的动词的正确形式完成句子) How many socks are there in there pairs?是什么意思 英语题there are five pairs to choose from ,but i am at a loss which to buythere are five pairs______,but i'm at a loss which to buy.choose from 为什么不能选for choosing there are five pairs to choose from ,but i am at a loss which to buythere are five pairs______,but i'm at a loss which to buy.choose from 为什么不能选for choosing there are twenty-five是什么意思? How many shoes are there in twenty-six pairs? How many socks are there in three pairs?英语回答 How many shoes are there in fifty pairs?回答 There are five pairs ,but I am at a loss which to buy.A.to be chosen B.to choose from C.to choose D.for choosing 结束 请问前面的英语句子中,问号处应该填哪个选项?