The problem was that it didn’t work (which )took all the bicycles within weeks!
which 指代前面的The problem was that it didn’t workA.robbers B.shoplifters C.kidnappersD,thieves,刚刚忘打了，不好意思A.robbers n. 盗贼B.shopliftersn. 商店扒手；商店里顺手牵羊的人C.kidnappers n. 绑匪；诱拐者D,thieves n. 小偷答案选D,thieves把这句话翻译一下，谢谢问题是它不能解决这些天小偷偷走所有自行车的问题。