挑错题while shopping, pepole sometimes can't help persuading into buying something they don't.

while shopping, pepole sometimes can't help persuading （being pursuaded意思被说服）into buying something they don't need.当买东西时，人们有时会情不自禁地被说服买一些他们不必要的东西。

在购物时，人们有时不能自已的花时间买不需要的东西

应是being persuaded----
被说服，是被动语态

修改后：
while shopping, pepole sometimes can't help being persuaded into buying something they don't.

当人们购物时，总是忍不住被（售货员）说服，买一些他们不需要的东西。
这句话后半部分是被动语义，所以应该用被动式。